5001538
Descripción
Test por jostenhardy, actualizado hace más de 1 año
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Creado por jostenhardy
hace alrededor de 8 años
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Pregunta 1
Pregunta
Which of the following is a function of a smooth mucle?
Respuesta
-
communication
-
production of body heat
-
constriction of organs and vessels
-
respiration
Pregunta 2
Pregunta
What type of connective tissue surrounds individual muscle fibers?
Respuesta
-
epimysium
-
perimysium
-
muscular fascia
-
endomysium
Pregunta 3
Pregunta
what is the plasma membrane of a muscle fiber called?
Respuesta
-
sarcoplasm
-
sarcomere
-
sarcolemma
-
endomysium
Pregunta 4
Pregunta
myofibrils are formed from _________ that are joined end to end.
Respuesta
-
actin myofilaments
-
sarcomeres
-
myosin myofilaments
-
sarcolemmas
Pregunta 5
Pregunta
The thick filament is also known as the _______________ myofilament?
Respuesta
-
myosin
-
titin
-
actin
-
troponin
Pregunta 6
Pregunta
which molecule covers the active site on the G actin?
Respuesta
-
tropomyosin
-
troponin
-
titin
-
m line
Pregunta 7
Pregunta
which molecule has a binding site for calcium?
Respuesta
-
tropomyosin
-
troponin
-
titin
-
m line
Pregunta 8
Pregunta
which of the following in NOT a part of the myosin molecule?
Respuesta
-
rod
-
M line
-
hinge region
-
head
Pregunta 9
Pregunta
the A band is made up of
Respuesta
-
myosin and titin
-
Z disk and actin
-
M line and Z disk
-
actin and myosin
Pregunta 10
Pregunta
the structural and functional unit of skeletal muscle is the
Respuesta
-
sarcolemme
-
actin myofilament
-
sarcomere
-
myosin myofilament
Pregunta 11
Pregunta
What shortens during the sliding filament model of muscle contraction?
Respuesta
-
H Zone, A band, and sarcomere
-
10 bands, 50 bands, 100 bands, fk it man, lets just not even discuss it man
-
sarcomere, H zone, and I band
-
A band, I band, and H zone
Pregunta 12
Pregunta
The binding of acetylcholine to a ligand-gated channel will allow ______ to enter the muscle fiber
Respuesta
-
calcium ions
-
potassium ions
-
sodium ions
-
All of the choices are correct
Pregunta 13
Pregunta
which of the following is NOT part of a neuromuscular junction?
Respuesta
-
motor end-plate
-
presynaptic terminal
-
sarcoplasmic reticulum
-
synaptic cleft
Pregunta 14
Pregunta
by what process does acetylcholine move to the postsynaptic membrane?
Respuesta
-
active transport
-
endocytosis
-
exocytosis
-
osmosis
Pregunta 15
Pregunta
what is the direct cause of the release of calcium ions from the sarcoplasmic reticulum?
Respuesta
-
ACH binding to the recepton of the Na+ gated channel
-
calcium being released into the presynaptic terminal
-
the action potential traveling into the T tubules
-
potassium flowing out of the postsynaptic membrane
Pregunta 16
Pregunta
what is ATP directly used for in cross-bridge movement of myosin?
Respuesta
-
Attachment of the myosin head to the active site of actin
-
the power stroke of the myosin head
-
the release of the myosin head from the actin
-
all are correct
Pregunta 17
Pregunta
which of the following is NOT an event that occurs during the lag phase of a muscle twitch?
Respuesta
-
ACH diffuses across the synaptic cleft
-
the action potential travels down the T tubules
-
cross-bridges between actin and myosin are formed
-
calcium ions bind to troponin
Pregunta 18
Pregunta
how does the body respong to an increase in body temperature due to exercise?
Respuesta
-
shivering
-
decreased muscle contractions
-
dilation of skin blood vessels and sweating
-
slower respiration
Pregunta 19
Pregunta
what causes muscle hypertrophy?
Respuesta
-
an increase in the number of muscle fibers
-
fibers increase the number of myofibril and sarcomere
-
skeletal muscle cell nuclei divide
-
all are correct
Pregunta 20
Pregunta
sensory receptors and nerves make up the
Respuesta
-
Peripheral nervous system
-
enteric nervous sustem
-
autonomic nervous system
-
central nervous system
Pregunta 21
Pregunta
a bundle of axons and their connective tissue sheaths are called
Respuesta
-
receptors
-
nerves
-
ganglia
-
effectors
Pregunta 22
Pregunta
the enteric nervous system involves the
Respuesta
-
respiratory system
-
urinary sytem
-
cardiovascular system
-
digestive system
Pregunta 23
Pregunta
what organelle in the neuron is the primary site of protein synthesis
Respuesta
-
rough ER
-
smooth ER
-
nucleolus
-
nissl substance
Pregunta 24
Pregunta
neurotransmitters are found in the
Respuesta
-
dendritic spines
-
Presynaptic terminals
-
trigger zone
-
soma
Pregunta 25
Pregunta
which of the following is NOT a functional classifications of neurons
Respuesta
-
interneuron
-
Bipolar neuron
-
sensory neuron
-
motor neuron
Pregunta 26
Pregunta
most sensory neurons are
Respuesta
-
Unipolar
-
multipolar
-
bipolar
-
tripolar
Pregunta 27
Pregunta
which of the following neuroglia are NOT found in the CNS
Respuesta
-
schwann cells
-
oligodendrocytes
-
astrocytes
-
ependymal cells
Pregunta 28
Pregunta
which type of neuroglial cells are responsible for the formation of the blood-brain barrier
Respuesta
-
schwann cells
-
oligodendrocytes
-
astrocytes
-
ependymal cells
Pregunta 29
Pregunta
which type of neuroglial cells respond to inflammation and are phagocytic
Respuesta
-
microglial
-
ependymal cells
-
oligodendrocytes
-
astrocytes
Pregunta 30
Pregunta
the oligodendrocytes form
Respuesta
-
the blood brain barrier
-
The myelin sheath around CNS axons
-
the myelin sheath around PNS axons
-
cerebrospinal fluid
Pregunta 31
Pregunta
groups of cell bodies and nonmyelinated axons form
Respuesta
-
gray matter
-
white matter
-
nerve tracts
-
ganglia
Pregunta 32
Pregunta
collections of myelinated axons in the CNS are called
Respuesta
-
ganglia
-
nerve tracts
-
nuclei
-
nerves
Pregunta 33
Pregunta
which of the following is NOT found in high concentration outside of a nerve cell
Respuesta
-
Na+
-
Cl-
-
Ca2+
-
K+
Pregunta 34
Pregunta
what type of membrane channels are nongated and responsible for the permeability of the membrane at rest?
Respuesta
-
Na-K pump
-
Leak Channels
-
ligand gated ion channels
-
volatge gated ion channels
Pregunta 35
Pregunta
which of the following is NOT true about changes in the membrane potential
Respuesta
-
an increase in the movement of potassium out of the cell creates a hyperpolarization
-
an increase in the movement of calcium ions into the cell creates a hyperpolarization
-
an increase in the movement of sodium ions into the cell causes depolarization
-
an increase in the movement of chloride ions into the cell causes hyperpolarization
Pregunta 36
Pregunta
the continued movement of potassium ions out of the cell through open voltage-gated K+ channels is called
Respuesta
-
polarization
-
depolarization
-
Repolarization
-
hyperpolarization
Pregunta 37
Pregunta
complete insensitivity to additional stimuli, no matter how strong is called the
Respuesta
-
absolute refractory period
-
threshold period
-
relative refractory period
-
all or none principle
Pregunta 38
Pregunta
which of the following is NOT part of a chemical synapse
Respuesta
-
connexons
-
postsynaptic terminal
-
synaptic cleft
-
presynaptic terminal
Pregunta 39
Pregunta
what type of summation occurs when two action potentials arrive in close succession at the presynaptic terminal that add together to produce an action potential
Respuesta
-
temporal summation
-
excitatory summation
-
spatial summation
-
oscillating summation
Pregunta 40
Pregunta
a neuron pathway with many presynaptic neurons synapsing with one postsynaptic neuron is called a
Respuesta
-
oscillating circuit
-
convergent pathway
-
parallel pathway
-
divergent pathway
Pregunta 41
Pregunta
which of the following is NOT a part of the study of anatomy
Respuesta
-
the structure of body parts
-
predicting the body's responses to stimuli
-
microscopic organization
-
the relationship between structure and function
Pregunta 42
Pregunta
which anatomical body region is NOT matched with its common name
Respuesta
-
brachial- arm
-
pectoral- chest
-
coxal- hip
-
crural- ankle
Pregunta 43
Pregunta
which of the following is NOT true about isotopes
Respuesta
-
isotopes are two or more forms of the same element
-
isotopes have different atomic numbers
-
isotopes have different mass numbers
-
some isotopes are radioactive
Pregunta 44
Pregunta
the folding or bending of the polypeptide chain into an alpha-helix or beta-pleated sheet held by hydrogen bonds is the _________ structure of a protein
Respuesta
-
primary
-
secondary
-
tertiary
-
quaternary
Pregunta 45
Pregunta
in a solution of sugar and water, which of the following is true?
Respuesta
-
sugar is the solvent and water is the solution
-
sugar is the solute and water is the solvent
-
sugar is the solvent and water is the solute
-
sugar and water are both getting turnt tonighttttt
Pregunta 46
Pregunta
the use of protein molecules to move non-lipid soluble molecules and ions through the plasma membrane is called
Respuesta
-
osmosis
-
simple diffusion
-
lysis
-
mediated transport
Pregunta 47
Pregunta
what type of cell is found in cartilage
Respuesta
-
fibroblast
-
osteocyte
-
chondrocyte
-
osteoclast
Pregunta 48
Pregunta
which of the following is NOT a type of internal body membrane
Respuesta
-
synovial membrane
-
serous membrane
-
cutaneous membrane
-
mucuous membrane
Pregunta 49
Pregunta
which is the correct sequence of the strata of the epidermis from deep to superficial?
1. Stratum Lucidum
2. Stratum basale
3. stratum corneum
4. stratum granulosum
5. stratum spinosum
Respuesta
-
3 1 4 5 2
-
1 2 3 4 5
-
2 5 4 1 3
-
4 2 3 1 5
Pregunta 50
Pregunta
the formation of bone by osteoblasts is called
Respuesta
-
ossification
-
osteogenesis
-
resorption
-
both ossification and osteogenesis
Pregunta 51
Pregunta
the elevated ridges of tissue on the surface of the cerebral hemispheres are known as __________ while the shallow grooves are termed _______
Respuesta
-
sucli: gyri
-
gyri: sucli
-
ganglia: gyri
-
tracts: ganglia
Pregunta 52
Pregunta
a stroke in the primary motor area has caused Austin to lose control over his skeletal muscles on the right side of his body. What lobe of his brain was damaged?
Respuesta
-
occipital lobe
-
temporal lobe
-
frontal lobe
-
parietal lobe
Pregunta 53
Pregunta
Kegen has a brain injury: she knows what she wants to say but cant vocalize the words. the part of her brain that deals with the ability to speak is the
Respuesta
-
longitudinal fissure
-
gyrus
-
central sulcus
-
Broca's area
Pregunta 54
Pregunta
the midbrain, pons, and medulla oblongata are housed in the
Respuesta
-
armpit
-
hypothalamus
-
brain stem
-
pineal gland
Pregunta 55
Pregunta
which lobe contains the primary motor area and enables the voluntary control of skeletal muscle movements
Respuesta
-
parietal lobe
-
temporal lobe
-
occipital lobe
-
frontal lobe
Pregunta 56
Pregunta
the pituitary gland is most closely associated with the
Respuesta
-
hypothalamus
-
thalamus
-
pineal gland
-
midbrain
Pregunta 57
Pregunta
the area of the brain stem that plays a role in consciousness and the sleep/wake cycles is the
Respuesta
-
thalamus
-
reticular activating system
-
pineal gland
-
limbic system
Pregunta 58
Pregunta
control of temperature, endocrine activity, metabolism, and thirst are functions associated with the
Respuesta
-
medulla oblongata
-
cerebellum
-
hypothalamus
-
thalamus
Pregunta 59
Pregunta
the vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the
Respuesta
-
pons
-
medulla oblongata
-
midbrain
-
cerebrum
Pregunta 60
Pregunta
loss of muscle coordination results from the damage to the
Respuesta
-
cerebrum
-
hypothalamus
-
cerebellum
-
thalamus
Pregunta 61
Pregunta
which one of the following represents the correct sequence from the outermost to innermost layers of the meninges
Respuesta
-
dura: arachnoid: pia
-
pia: arachnoid: dura
-
arachnoid: dura: pia
-
dura: spider: pia
Pregunta 62
Pregunta
the cerebrospinal fluid
Respuesta
-
is secreted by the arachnoid villa
-
enters the four ventricles after filling and circulating through the subarachnoid space
-
is secreted mostly by the ependymal cells lining the brain ventricles
-
is continually formed mostly by the choroid plexuses
Pregunta 63
Pregunta
the gray matter of the spinal cord
Respuesta
-
surrounds the central canal
-
contains myelinated fiber tracts
-
is made up of the dorsal, lateral, and ventral columns
-
surrounds the white matter of the spinal cord
Pregunta 64
Pregunta
which one of the following is the correct sequence in connective tissue sheaths, going from outermost to innermost layer
Respuesta
-
epineurium, endoneurium, perineurium
-
epineurium, perineurium, endoneurium
-
perineurium, epineurium, endoneurium
-
perineurium, endoneurium, epineurium
Pregunta 65
Pregunta
who is the coolest cat of them all, not including Brennan
Respuesta
-
Josten
-
Kegen
-
Lindsey
-
Austin
Pregunta 66
Pregunta
which of the following is NOT true of skeletal muscle
Respuesta
-
long, cylindrical fibers
-
multiple nuclei
-
totally under involuntary control
-
has striations
Pregunta 67
Pregunta
what type of connective tissue surrounds bundles of muscle fibers to create the muscle fascicles
Respuesta
-
epimysium
-
perimysium
-
muscular fascia
-
endomysium
Pregunta 68
Pregunta
what is the plasma membrane of a muscle fiber called
Respuesta
-
sarcoplasm
-
sarcomere
-
sarcolemma
-
endomysium
Pregunta 69
Pregunta
myofibrils are formed from __________ that are joined end to end
Respuesta
-
actin myofilaments
-
sarcomeres
-
myosin myofilaments
-
sarcolemmas
Pregunta 70
Pregunta
which molecule covers the active site on the G actin
Respuesta
-
tropomyosin
-
troponin
-
titin
-
M line
Pregunta 71
Pregunta
the H zone is where
Respuesta
-
there is only actin
-
there is only myosin
-
there is only the Z disk
-
there is only titin
Pregunta 72
Pregunta
the structural and functional unit of skeletal muscle is the
Respuesta
-
sarcolemma
-
actin myofilament
-
sarcomere
-
myosin myofilament
Pregunta 73
Pregunta
what shortens during the siding filament model of muscle contraction
Respuesta
-
H zone, A band, and sarcomere
-
A band, I band, and sarcomere
-
sarcomere, H zone, I band
-
A band, I band, and H zone
Pregunta 74
Pregunta
there are ________ pairs of cranial nerves and _________ pairs of spinal nerves
Respuesta
-
31, 12
-
12, 25
-
13, 31
-
12, 31
Pregunta 75
Pregunta
the enteric nervous system involves the
Respuesta
-
respiratory system
-
urinary system
-
cardiovascular system
-
digestive system
Pregunta 76
Pregunta
which subdivision of the autonomic nervous system regulates resting or vegetative functions
Respuesta
-
parasympathetic
-
enteric
-
somatic
-
sympathetic
Pregunta 77
Pregunta
what organelle in the neuron is the primary site of protein synthesis
Respuesta
-
rough ER
-
smooth ER
-
nucleolus
-
nissl substance
Pregunta 78
Pregunta
the area of the neuron cell body that generates the action potential is the
Respuesta
-
trigger zone
-
soma
-
dendritic spine
-
none of the choices are correct
Pregunta 79
Pregunta
what type of summation occurs when two action potentials arrive in close succession at the presynaptic terminal that add together to produce an action potential
Respuesta
-
temporal summation
-
excitatory summation
-
spatial summation
-
oscillating summation
Pregunta 80
Pregunta
what produces cerebrospinal fluid
Respuesta
-
arachnoid granulations
-
dural sinuses
-
choroid plexuses
-
pia mater
Pregunta 81
Pregunta
what type of fibers connect areas of the cerebral cortex within the same hemisphere
Respuesta
-
association fibers
-
commissural fibers
-
projection fibers
-
cerebral penducles
Pregunta 82
Pregunta
what structure separates the frontal from the parietal lobe
Respuesta
-
longitudinal fissure
-
transverse fissure
-
central sulcus
-
lateral fissure
Pregunta 83
Pregunta
raised folds on the surface of the cerebrum are called
Respuesta
-
gyri
-
sulci
-
fissures
-
lobes
Pregunta 84
Pregunta
which of the following is NOT a function of the hypothalamus
Respuesta
-
body temperature control
-
autonomic nervous system control
-
mood and emotions
-
all of them
Pregunta 85
Pregunta
all sensory impulses except for smell are relayed through the
Respuesta
-
hypothalamus
-
epithalamus
-
thalamus
-
subthalamus
Pregunta 86
Pregunta
which of the following is NOT part of the diencephalon
Respuesta
-
hypothalamus
-
midbrain
-
thalamus
-
subthalamus
Pregunta 87
Pregunta
the white matter of the cerebellum is called the
Respuesta
-
folia
-
cerebellar penducles
-
arbor vitae
-
vermis
Pregunta 88
Pregunta
which of the following is NOT part of the brainstem
Respuesta
-
thalamus
-
pons
-
medulla oblongata
-
midbrain
Pregunta 89
Pregunta
the connective tissue wrap that surrounds many fascicles to form a nerve is the
Respuesta
-
epineurium
-
perineurium
-
endoneurium
-
dermaneurium
Pregunta 90
Pregunta
which of the following is the correct sequence of structures in a reflex arc
Respuesta
-
effector organ, motor neuron, interneuron, sensory neuron, sensory receptor
-
interneuron, sensory neuron, motor neuron, sensory receptor, effector organ
-
sensory receptor, sensory neuron, interneuron, motor neuron, effector organ
-
sensory receptor, sensory neuron, motor neuron, interneuron, effector organ
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