Nervous system

Question 1

are the anatomic and physiologic unit of the nervous system

Answer 1

neurons

Question 2

it consists of the cell body and all its processes, the _____ and ____.

Answer 2

dendrites and axon

Question 3

mammalian neurons can be:

Answer 3

bipolar(one axon and one dendrite) and multipolar (many branching dendrites and one axon)

Question 4

specialized sensory neurons for the transmission of sense.

Answer 4

bipolar cells

Question 5

a type of neuron that possesses a single axon and many dendrites.

Answer 5

multipolar neuron

Question 6

a group of nerve cell bodies within the brain or spinal cord is referred to as

Answer 6

nucleus

Question 7

a group of nerve cell bodies outside the brain or spinal cord is called a

Answer 7

ganglion

Question 8

a bundle of neuron fibers within the brain or spinal cord

Answer 8

tract

Question 9

a bundle of neuron fibers outside the brain or spinal cord

Answer 9

nerve

Question 10

continuity from one neuron to the next is provided by this. There is no physical contact of neuron.

Answer 10

synapse

Question 11

is a white lipid substance that forms a sheath around nerve fibers and serves as an electrical insulator

Answer 11

myelin

Question 12

central nervous system consists of:

Answer 12

brain and spinal cord

Question 13

peripheral nervous system

Answer 13

cranial nerves, spinal nerves, autonomic nerves, ganglia

Question 14

is a very delicate organ lodged inside the cranium of the skull

Answer 14

brain

Question 15

the space between the membranes is filled with a fluid called

Answer 15

cerebrospinal fluid

Question 16

brain three main regions

Answer 16

forebrain, midbrain; hindbrain

Question 17

consisting of cerebrum and diencephalon

Answer 17

forebrain

Question 18

a small tubular part between the fore and the hindbrain

Answer 18

midbrain

Question 19

consists of cerebellum, pons, and medulla oblongata

Answer 19

hindbrain

Question 20

this is the largest part of the brain, divided into two parts called cerebral hemispheres.

Answer 20

cerebrum

Question 21

the outer region contains cell bodies of the nerve cells and being grayish in color

Answer 21

gray matter

Question 22

the inner region is composed of whitish axon fibers

Answer 22

white matter

Question 23

a sheet of cress-cross nerve fibers connecting the two cerebral hemispheres

Answer 23

corpus callosum

Question 24

this is the part of the forebrain lying below the cerebrum

Answer 24

diencephalon

Question 25

this is an egg-shaped mass of gray matter

Answer 25

thalamus

Question 26

this is the region of the brain located below thalamus

Answer 26

hypothalamus

Question 27

is a smaller region of the brain located at the base and under cerebrum.

Answer 27

cerebellum

Question 28

two main functions are:

Answer 28

to maintain the balance of the body; to coordinate muscle activities.

Question 29

this is the last part of the brain, which is connected to the spinal cord.

Answer 29

medulla oblongata

Question 30

those parts of the peripheral nervous system that innervate smooth, cardiac muscles, and glands.

Answer 30

autonomic nerves

Question 31

the spinal reflexes include:

Answer 31

1. the stretch reflex 2. the golgi tendon reflex 3. the crossed extensor reflex 4. the withdrawal reflex

Question 32

is a muscle contraction in response to stretching within the muscle.

Answer 32

stretch reflex

Question 33

is a normal component of the reflex arc of the peripheral nervous system.

Answer 33

golgi tendon reflex

Question 34

is a withdrawal reflex.

Answer 34

crossed extensor reflex

Question 35

is a spinal reflex intended to protect the body from damaging stimuli.

Answer 35

withdrawal reflex

Question 36

aid in maintaining an upright position.

Answer 36

postural reflexes and reactions

Question 37

pushing down the back of a dog causes muscle movement that compensate for and resist the displacement.

Answer 37

standing reflex

Question 38

displacement of one part of the body is followed by posturalchanges in other parts of the body.

Answer 38

attitudinal reflexes

Question 39

dropping an inverted cat is followed by its landing in the upright position.

Answer 39

righting reflex

Question 40

pushing a supported dog with three limbs elevated results in a placement correcting...

Answer 40

hopping reaction

Question 41

are chemicals produced by one species that affects the physiology or behavior of animals of the same species.

Answer 41

pheromones

Question 42

ear is divided into:

Answer 42

external ear; middle ear; inner ear