Peripheral Nervous System

Question 1

What are the subdivisions of the nervous system?

Answer 1

central nervous system and peripheral nervous system

Question 2

What are the subdivisions of the central nervous system?

Answer 2

Brain and spinal cord

Question 3

What are the subdivisions of the peripheral nervous system?

Answer 3

Somatic nervous system and autonomic nervous system

Question 4

what is an axon?

Answer 4

A fiber that connects neurons

Question 5

What is a dendrite?

Answer 5

Where a neuron receives input from other cells

Question 6

What is a Cell body?

Answer 6

spherical part of the neuron that contains the nucleus and connects to the dendrites which brings information to the neuron and axon

Question 7

What is a multipolar neuron?

Answer 7

a neuron that contains a single axon and many dendrites

Question 8

What is a unipolar neuron?

Answer 8

A neuron that possesses a single axon and one dendrite

Question 9

What is a bipolar neuron?

Answer 9

a neuron with one cell body and two dendrites

Question 10

What is grey matter?

Answer 10

substantia grisea, made of cell bodies

Question 11

What is White matter?

Answer 11

Substantia alba, made of nerve fiber

Question 12

What is the dorsal root ganglion?

Answer 12

emerges from the dorsal root of spinal nerves, carries sensory messages from various receptors

Question 13

Which root is primarily sensory?

Answer 13

posterior root is sensory

Question 14

Which root is primarily motor?

Answer 14

The anterior root is motor

Question 15

Which group has 10 cranial nerves?

Answer 15

Fish and amphibians

Question 16

Which groups have 12 cranial nerves?

Answer 16

Reptiles, birds, and mammals

Question 17

Describe a monosynaptic reflex.

Answer 17

a reflex that provides direct communication between sensory and motor neurons innervating the muscles.

Question 18

Describe a polysynaptic reflex.

Answer 18

at least one interneuron between sensory neuron and motor neuron

Question 19

Describe the fate of the first pharyngeal arch.

Answer 19

1- muscles of mastication CN V- masseter muscle, maxillary artery, maxilla, meckels cartilage

Question 20

Describe the fate of the second pharyngeal arch.

Answer 20

Smilling- cn vii stapedial artery stapes stylohyoid

Question 21

Describe the fate of the third pharyngeal arch

Answer 21

CN ix glossopharyngeal artery, carotid arteries

Question 22

Describe the fate of the fourth pharyngeal arch

Answer 22

CN X

Question 23

Describe the fate of the fifth pharyngeal arch

Answer 23

disappears

Question 24

Describe the fate of the sixth pharyngeal arch

Answer 24

CN X

Question 25

Cranial Nerve 1

Answer 25

Olfactory- smell- sensory

Question 26

Cranial Nerve 2

Answer 26

Optic- vision- sensory

Question 27

Cranial Nerve 3

Answer 27

Oculomotor- most eye movement- motor

Question 28

Cranial Nerve 4

Answer 28

Trochlear- moves eye- motor

Question 29

Cranial Nerve 5

Answer 29

Trigeminal- face sensation, mastication- sensory and motor

Question 30

Cranial Nerve 6

Answer 30

Abducens- abducts the eye- motor

Question 31

Cranial Nerve 7

Answer 31

Facial- Facial expression and taste- sensory and motor

Question 32

Cranial Nerve 8

Answer 32

Vestibulocochlear- hearing and balance- Sensory

Question 33

Cranial Nerve 9

Answer 33

Glossopharyngeal- taste gag reflex- sensory and motor

Question 34

Cranial Nerve 10

Answer 34

vagus- Gag reflex parasympathetic innervation- Sensory and motor

Question 35

Cranial Nerve 11

Answer 35

Accessory- shoulder shrug- motor

Question 36

Cranial Nerve 12

Answer 36

Hypoglossal- swallowing speech- motor

Question 37

what are the divisions of the autonomic nervous system

Answer 37

sympathetic and parasympathetic

Question 38

what are the functions of the sympathetic nervous system

Answer 38

fright or flight

Question 39

what are the functions of the parasympathetic nervous system

Answer 39

rest and digest

Question 40

what is the function of sensory receptors

Answer 40

detect changes in the environment and convert these changes into electrical signals that can be processed by the nervous system

Question 41

What are general visceral receptors and where are they located

Answer 41

receptors found in organs of the thorax, abdomen, and pelvis

Question 42

What are some functions of general visceral receptors

Answer 42

send pain info from the digestive tract