Karteikarten
Somatic Nervous System
Karten in diesem Stapel (50)
- 1These motor (efferent) neurons convey neural impulses from the CNS (brain & spinal cord) to distant targets, such as muscles, organs, and glands.Multipolar neurons
- 2These sensory (afferent) neurons convey neural impulses from sensory receptor (in skin, muscles, organs) to the CNS.Pseudounipolar neurons
- 3The nervous system can be divided into two parts based on ___ and ___ .structure and function
- 4What are the structural subdivisions of the NS?Central NS and Peripheral NS
- 5What are the functional subdivisions of NS?Somatic (voluntary) NS
&
Autonomic (involuntary) NS - 6What is the involuntary division of the NS?Autonomic
- 7What is the voluntary division of the NS?Somatic
- 8What are two functions of the CNS?1. integrates/coordinates incoming and outgoing signals
2. carries out higher order "cognitive" functions such as learning & memory - 9What are the two body parts of the CNS?brain and spinal cord
- 10What do cross-sections of the spinal cord reveal?gray matter and white matter
- 11This particular type of matter is somewhat H-shaped. It consists of regions within the CNS with a high density of neuronal cell bodies.Gray matter
- 12This particular type of matter consists of nerve axon bundles (tracts), which travel to and from the brain.White matter
- 13How are gray matter regions divided?Dorsal and Ventral horns
- 14What type of horns lie on the posterior side of gray matter?Dorsal horns
- 15What type of horns lie on the anterior side of gray matter?ventral horns
- 16This system consists of all neural tissues outside the CNS.Peripheral Nervous System
- 17This division of the NS conducts impulses to or away from the CNS.Peripheral Nervous System
- 18What is a ganglion (ganglia)?A collection of nerve cell bodies in the PNS
- 19What is a bundle of nerve axons in the PNS?peripheral nerve
- 20How are peripheral nerves classified?As either cranial nerves or spinal nerves
- 21How many pairs of cranial nerves are there?12 pair
- 22What arises from the spinal cord?spinal nerves (peripheral nerves)
- 23How many pairs of spinal nerves are there? What are the different types?31 pairs
- 8 cervical
- 12 thoracic
- 5 lumbar
- 5 sacral
- 1 coccygeal - 24How many spinal segments are throughout the length of the spinal cord?31 (one for each pair of spinal nerves)
- 25How do spinal nerves arise from the spinal cord?By rootlets
- 26What do rootlets converge to form?Dorsal roots and Ventral roots
- 27Dorsal and Ventral roots unit to form a ____ ____ .spinal nerve
- 28Identify the formation of a spinal nerve.
- 29Spinal nerves divide into two branches of these.Dorsal and Ventral rami
- 30What type of nerves are spinal nerves and their branches (dorsal & ventral rami) considered?peripheral nerves
- 31Dorsal rami convey nerve fibers (axons) to/from what?Back muscles and skin overlying the back
- 32Ventral rami convey nerve fibers (axons) to/from what?Anterior and lateral regions of the torso/trunk
arms and legs - 33What are the types of peripheral nerves?somatic motor, somatic sensory, visceral motor, and visceral sensor
- 34____ ____ ____ convey impulses from the CNS to skeletal (voluntary) muscles.Somatic motor nerves
- 35Are somatic motor nerves multipolar or pseudounipolar?multipolar
- 36___ ____ ____ convey sensations from the body to the CNS.Somatic Sensory Nerves
- 37What 3 types of sensations are experienced by somatic sensory nerves?pain, touch, and temperature
- 38Are somatic sensory nerves multipolar or pseudounipolar?pseudounipolar neurons
- 39Where do cell bodies of somatic motor nerves reside in?ventral horn
- 40The axons of the somatic motor nerves exit the spinal cord via the ___ ___ and ultimately innervate skeletal muscles.ventral root
- 41Somatic sensory nerve axons project into the dorsal horn of the spinal cord via what root?the dorsal root
- 42Where do the cell bodies of the somatic sensory nerves reside?Dorsal root ganglion
(a swelling located along the dorsal root of all spinal nerves) - 43These ___ ____ nerves convey impulses from the CNS out to skeletal (voluntary) muscles, such as biceps.Somatic Motor
- 44These ___ ___ nerves convey sensations (pain, temp, touch, proprioception) from the body to the CNS.Somatic (General) Sensory
- 45What two types of neurons does the SNS or "voluntary" nervous system utilize?sensory portion
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motor portion - 46What does the sensory portion of the SNS convey?sensations of touch, temp, pain from peripheral sensory receptors
- 47What does the motor portion of the SNS convey?voluntary or reflexive movements by contracting skeletal muscles
- 48If I touched a warm iron, what nervous system is being used?SNS
- 49What does the Autonomic Nervous System innervate?organs (viscera) in the body cavities
smooth & cardiac muscle
glands (sweat & salivary) - 50What parts of the body doesn't the somatic nervous system innervate?organs (viscera) in the body cavities
smooth & cardiac muscle
glands (sweat & salivary)
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- Beschreibung
- Gross Anatomy Karteikarten am Somatic Nervous System, erstellt von Kristina Redd am 12/07/2017.
- Erstellt von
- Kristina Redd
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