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Exam 3 - Chapter 9, Part One

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Test sobre Exam 3 - Chapter 9, Part One, creado por Levi Chodorow el 19/03/2017.
Levi Chodorow
Test por Levi Chodorow, actualizado hace más de 1 año
Levi Chodorow
Creado por Levi Chodorow hace más de 9 años
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Resumen del Recurso

Pregunta 1

Pregunta
Which of the following is NOT considered one of the basic properties of muscle tissue?
Respuesta
  • excitability
  • elasticity
  • support
  • Contractility

Pregunta 2

Pregunta
The primary role of this type of muscle tissue is to push fluid and solids along the digestive tract and to perform varied functions in other systems.
Respuesta
  • Smooth muscle
  • Cardiac muscle
  • Skeletal muscle

Pregunta 3

Pregunta
The primary role of this type of muscle tissue is to push blood through arteries and veins in rhythmic contractions
Respuesta
  • Skeletal muscle
  • Cardiac muscle
  • Smooth muscle

Pregunta 4

Pregunta
Movement of skeletal muscles is an involuntary contraction
Respuesta
  • True
  • False

Pregunta 5

Pregunta
__________ muscles are contractile organs directly or indirectly attached to bones of the skeleton.
Respuesta
  • Skeletal muscle
  • Cardiac muscle
  • Smooth muscle

Pregunta 6

Pregunta
_____ is the ability to continue to contract over a range of resting lengths
Respuesta
  • Extensibility
  • Elasticity
  • Excitability
  • Contractility

Pregunta 7

Pregunta
The ability to respond to stimuli
Respuesta
  • Excitability
  • Responsibility
  • Reaction
  • stimulated

Pregunta 8

Pregunta
The ability to rebound toward its original length
Respuesta
  • Elasticity
  • Contractility
  • Stimulate
  • Flexion

Pregunta 9

Pregunta
Which of the following is/are considered function(s) of skeletal muscle? (Choose all that apply)
Respuesta
  • produce skeletal movement
  • Maintain posture and body position
  • Support soft tissue
  • regulate entering and exiting of material
  • control of the body and communication among its parts.

Pregunta 10

Pregunta
Is control over swallowing, defecation, and urination voluntary or involuntary?
Respuesta
  • Voluntary
  • Involuntary

Pregunta 11

Pregunta
Some of the energy used for contraction is converted to heat
Respuesta
  • True
  • False

Pregunta 12

Pregunta
dense tissue that contain connective tissue wrapped around each muscle fiber, which binds each fiber to its neighbor
Respuesta
  • Epimysium
  • Perimysium
  • Endomysium

Pregunta 13

Pregunta
dense tissue that divides the muscle into parallel compartments of fascicles (a bundle of structures)
Respuesta
  • Perimysium
  • Epimysium
  • Endomysium

Pregunta 14

Pregunta
dense tissue that surrounds individual muscle fibers
Respuesta
  • Endomysium
  • Perimysium
  • Epimysium

Pregunta 15

Pregunta
Nerves innervate the muscle by penetrating the _______
Respuesta
  • epimysium
  • Endomysium
  • Perimysium

Pregunta 16

Pregunta
There is a chemical communication between a nerve and a muscle The chemical is released into the _____
Respuesta
  • neuromuscular junction (aka, neuromuscular synapse)
  • Axon
  • Axon Terminal
  • Synaptic Cleft

Pregunta 17

Pregunta
• Blood vessels often parallel the nerves that innervate the muscle. • They then ______
Respuesta
  • branch to form coiled networks to accommodate flexion and extension of the muscle
  • dont do anything at all
  • branch to form coiled networks to push blood through arteries and veins
  • flood the body with neural activity

Pregunta 18

Pregunta
Membrane that surrounds the muscle cell
Respuesta
  • Sarcolemma
  • Sarcoplasm
  • Muscle fiber
  • myofilaments

Pregunta 19

Pregunta
The cytosol (the aqueous component of the cytoplasm of a cell) of the muscle cell
Respuesta
  • Sarcoplasm
  • Muscle fiber
  • Sarcolemma
  • myosatellite cells

Pregunta 20

Pregunta
______ is the same thing as muscle cell
Respuesta
  • Muscle fiber
  • Sarcoplasm
  • Sarcolemma
  • myosatellite cells

Pregunta 21

Pregunta
Where are nuclei of muscle fibers located?
Respuesta
  • just deep to the sarcolemma
  • in the sarcolemma
  • in the Sarcoplasm
  • just deep to the Sarcoplasm
  • the muscle fibers dont have nuclei

Pregunta 22

Pregunta
______ are responsible for the contraction of muscles
Respuesta
  • myofibrils
  • myofilaments
  • Muscle fibers
  • sarcomeres

Pregunta 23

Pregunta
______ are attached to the sarcolemma at each end of the muscle cell
Respuesta
  • myofibrils
  • myofilaments
  • sarcomeres
  • Muscle fibers

Pregunta 24

Pregunta
______ surrounds each myofibril
Respuesta
  • sarcoplasmic reticulum
  • epimysium
  • myosin
  • myofilaments

Pregunta 25

Pregunta
_____ are structures that consist primarily of the proteins actin and myosin
Respuesta
  • myofilaments
  • Cisternae
  • Sarcolemmas
  • Sarcomeres

Pregunta 26

Pregunta
______ are thin protein filaments in myofilaments
Respuesta
  • Actin
  • Myosin
  • titin
  • troponin

Pregunta 27

Pregunta
______ are thick protein filaments in myofilaments
Respuesta
  • Myosin
  • Actin
  • troponin
  • titin

Pregunta 28

Pregunta
All the myofilaments are arranged parallel to the long axis of the cell
Respuesta
  • True
  • False

Pregunta 29

Pregunta
______ are/is the main functioning unit of muscle fibers
Respuesta
  • Sarcomere
  • myofibrils
  • Muscle fibers
  • mybrofiber

Pregunta 30

Pregunta
_____ creates the striations that give the skeletal muscle its identifiable characteristic
Respuesta
  • overlapping actin and myosin (A Band)
  • separation of actin and myosin
  • the 10,000 myofibril per sarcomere
  • The Z Line (Z disc)

Pregunta 31

Pregunta
Within a sarcomere, the region between the A band and the Z line that contains of only thin filaments is the __________.
Respuesta
  • I band
  • M line
  • H band
  • zone of overlap

Pregunta 32

Pregunta
Overlapping _____ bands create striations
Respuesta
  • Z bands
  • I band
  • A band
  • H band
  • M line

Pregunta 33

Pregunta
_____ is a protein that covers the binding sites when the muscle is relaxed
Respuesta
  • Tropomyosin
  • Troponin
  • titin
  • nebulin

Pregunta 34

Pregunta
Know this picture . . . https://image.slidesharecdn.com/ch09lecturepresentation-140913123742-phpapp01/95/dr-b-ch-09lecturepresentation-15-638.jpg?cb=1410612013 Skeletal muscles consist of muscle fascicles • Muscle fascicles consist of muscle fibers • Muscle fibers consist of myofibrils • Myofibrils consist of sarcomeres • Sarcomeres consist of myofilaments • Myofilaments are made of actin and myosin
Image:
83e6493f-4a88-4ff3-8e78-df2a680930cd (image/jpeg)
Respuesta
  • ok
  • no

Pregunta 35

Pregunta
Which of the following statements regarding thick filaments is FALSE?
Respuesta
  • Myosin heads project toward the actin filaments
  • Adjacent thick filaments are interconnected by proteins of the H band.
  • Myosin filaments consist of an elongated tail and a globular head
  • A core of titin connects the Z lines

Pregunta 36

Pregunta
Which of these consists of Actin?
Respuesta
  • Thin Filaments
  • Thick Filaments

Pregunta 37

Pregunta
Which of these consists of Myosin?
Respuesta
  • Thin Filaments
  • Thick Filaments

Pregunta 38

Pregunta
A contracting muscle shortens in length
Respuesta
  • True
  • False

Pregunta 39

Pregunta
Contraction is caused by interactions between _______ and _______ within the sarcomere
Respuesta
  • thick and thin filaments
  • myofibrl and fascicle
  • epimysium and perimysium
  • I band and H band

Pregunta 40

Pregunta
Contraction is triggered by the presence of ______
Respuesta
  • calcium ions
  • phosphate ions
  • collagen fibers

Pregunta 41

Pregunta
Arrange the following from smallest structure to largest structure: (perhaps do it on a piece of paper): a. Muscle cell or muscle fiber b. Fascicle c. Myofilaments d. Whole skeletal muscle e. Myofibril
Respuesta
  • Myofilaments, Myofibril, Muscle cell or muscle fiber, Fascicle, Whole skeletal muscle
  • dont got it

Pregunta 42

Pregunta
According to the sliding filament theory when a muscle contracts, what happens?
Respuesta
  • The thick filaments slide past the thin filaments, and the sarcomere shotens.
  • The thin filaments slide past the thick filaments, and the sarcomere shortens.
  • actin filaments slide away from each other allowing the fibers in the muscle to contract

Pregunta 43

Pregunta
What controls muscle fibers?
Respuesta
  • motor unit
  • motor unit and motor neuron
  • motor neuron
  • muscles
  • None of the listed responses is correct.

Pregunta 44

Pregunta
Motor Units (Motor Neurons Controlling Muscle Fibers) have two types of control. The control over the eye muscles is an example of _________; meaning a ___________.
Respuesta
  • Precise control; motor neuron controlling two or three muscle fibers
  • less precise control; motor neuron controlling two or three muscle fibers
  • Precise control; A motor neuron controlling perhaps 2000 muscle fibers
  • less precise control; A motor neuron controlling perhaps 2000 muscle fibers

Pregunta 45

Pregunta
__________ refers to the condition in which muscles of the body remain semi-contracted for an extended period
Respuesta
  • Muscle tension
  • Muscle contraction
  • Muscle retraction

Pregunta 46

Pregunta
Muscle tension depends on (choose all that apply)
Respuesta
  • The frequency of stimulation
  • The number of motor units involved

Pregunta 47

Pregunta
A ______ is a motor neuron controlling Muscle Fibers
Respuesta
  • Motor Units
  • muscle fascicles
  • motor neurons
  • neural pathway

Pregunta 48

Pregunta
______ is the tension of a muscle when it is relaxed
Respuesta
  • Muscle Tone
  • Muscle Control
  • Muscle Contraction
  • Resting Muscle

Pregunta 49

Pregunta
_______ stabilizes the position of bones and joints. An example would be the amount of muscle involvement that results in normal body posture
Respuesta
  • Resting Muscle
  • Muscle Contraction
  • Muscle Tone
  • Muscle Control

Pregunta 50

Pregunta
_______ are specialized muscle cells that are monitored by sensory nerves to control muscle tone
Respuesta
  • Muscle Spindles
  • Muscle Fibers
  • red fibers
  • white fiber

Pregunta 51

Pregunta
Enlargement of the muscle is known as _______
Respuesta
  • Muscle Hypertrophy
  • Muscle Atrophy
  • Myopathies

Pregunta 52

Pregunta
Exercise causes (choose all that apply)
Respuesta
  • An increase in the number of mitochondria
  • An increase in the activity of muscle spindles
  • An increase in the concentration of glycolytic enzymes
  • An increase in the glycogen reserves
  • An increase in the number of myofibrils

Pregunta 53

Pregunta
______ is the discontinued use of a muscle
Respuesta
  • Muscle Atrophy
  • Muscle Hypertrophy
  • Myopathies

Pregunta 54

Pregunta
What is muscle tone?
Respuesta
  • the reduction in muscle size, tone, and power
  • the resting tension of skeletal muscles
  • a single contraction
  • muscle recruitment

Pregunta 55

Pregunta
the study of, Myofibrils, Myofilaments, Sarcomeres is _______
Respuesta
  • Microscopic anatomy
  • Gross anatomy

Pregunta 56

Pregunta
Myofibrils are bundles of myofilaments (protein filaments).
Respuesta
  • True
  • False

Pregunta 57

Pregunta
Humans rely on muscles for:
Respuesta
  • Many of our physiological processes
  • Virtually all our dynamic interactions with the environment
  • Stores minerals needed by blood cells.
  • Oxen-agates the body

Pregunta 58

Pregunta
Epimysium, perimysium, and endomysium converge to form ______. (Read them all)
Respuesta
  • tendons
  • connective tissue
  • Aponeuroses
  • All of these (they're the same thing - tends = bundle, aponeuroses = sheet)

Pregunta 59

Pregunta
Myosin (thick filament) and Actin are arranged in repeating units called _______
Respuesta
  • sarcomeres
  • tropomyosin
  • muscle waves
  • transverse tubules

Pregunta 60

Pregunta
Thin Filaments (Actin) Consists of twisted filaments of F actin strands and G actin globular molecules. Which of these consists of an active site (binding site)
Respuesta
  • G actin molecules
  • F actin strand

Pregunta 61

Pregunta
One sarcomere can defined as _____ line to _____ line
Respuesta
  • z to z
  • a to a
  • h to h
  • b to b

Pregunta 62

Pregunta
This is a picture of a portion of a sarcomere. What bank is represented by the red on the bottom. This is a stack of Actin and Z line.
Image:
0717679d-220b-4b17-93ea-0bfd63888152 (image/png)
Respuesta
  • I band
  • Z line
  • B line
  • H line

Pregunta 63

Pregunta
In between the I bands is the ____ band. This is represented by the green in this picture.
Image:
b50cf2aa-4654-4c9b-83d7-97b45b1d87c5 (image/png)
Respuesta
  • A band
  • B band
  • Boy band
  • Z band

Pregunta 64

Pregunta
In this picture the orange is the H zone. In the H zone there is only myosin and it is therefore less dark than the rest of the A band where actin and myosin are stacked.
Image:
7e311da6-6b28-4e69-ae22-f7c6fa1f5749 (image/png)
Respuesta
  • True
  • False

Pregunta 65

Pregunta
Muscle fiber also contains an abundance of WHAT, a starchlike carbohydrate that provides energy for the cell during heightened levels of exercise.
Respuesta
  • glycogen
  • calcium
  • calcium phosphate
  • cytosol

Pregunta 66

Pregunta
Part of actin filaments. A thin filament also has molecules of protein called WHAT (an elongated protein winds along the groove of the F actin).
Respuesta
  • Tropomyosin
  • Troponin
  • titin
  • myoblast

Pregunta 67

Pregunta
Each tropomyosin molecule has a smaller calcium-binding protein called WHAT bound to it. Holds tropomyosin in position
Respuesta
  • titin
  • myoblast
  • troponin
  • myosin

Pregunta 68

Pregunta
a light band; from Z disks to ends of thick filaments
Respuesta
  • I band
  • h band
  • a band
  • z band

Pregunta 69

Pregunta
n the middle of the A band, there is a lighter region called the WHAT, into which the thin filaments do not reach.
Respuesta
  • H band
  • B band
  • z band
  • I band

Pregunta 70

Pregunta
The thick filaments originate at a dark WHAT in the middle of the H band.
Respuesta
  • M Line
  • Z line
  • K line
  • S line

Pregunta 71

Pregunta
Each light I band is bisected by a dark narrow WHAT which provides anchorage for the thin filaments
Respuesta
  • Z disk
  • M line
  • H band
  • I band

Pregunta 72

Pregunta
Each segment of a myofilament from one Z disc to the next is called a WHAT
Respuesta
  • muscle fiber
  • myofibril
  • sarcomere

Pregunta 73

Pregunta
Myofilaments are made of actin and myosin
Respuesta
  • True
  • False

Pregunta 74

Pregunta
Study of Perimysium, Endmysim and epimysium
Respuesta
  • gross
  • microscopic
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