a&p quiz 6

Question 1

the _____ is the most superficial membrane of the meninges

Answer 1

dura mater

Question 2

the inferior end of the adult spinal cord terminates

Answer 2

inferior to L1

Question 3

the dorsal root of spinal nerves contains

Answer 3

sensory neurons

Question 4

which of the following is not part of the gray matter of the spinal cord?

Answer 4

lateral funiculus

Question 5

the central canal of the spinal cord is located within the

Answer 5

gray comissure

Question 6

the brachial plexus is formed from components of spinal nerves C5-T1

t/f

Answer 6

true

Question 7

there are right pairs of cervical spinal nerves

t/f

Answer 7

true

Question 8

the major ascending (sensory) ad descending (motor) tracts compose the gray matter of the spinal cord

t/f

Answer 8

false

Question 9

the spinal cord gives rise to 31 pairs of _____

Answer 9

spinal nerves

Question 10

the bulge in the spinal cord that gives off nerves to the upper limbs is called the ____ enlargement

Answer 10

cervical

Question 11

the bulge in the spinal cord that gives off nerves to the lower limbs is called the _____ enlargement

Answer 11

lumbar

Question 12

the _______ is a groove that extends the length of the spinal cord posteriorly

Answer 12

median suculus

Question 13

in a spinal cord cross section, the posterior ____ of the gray matter resembles the upper wings of a butterfly

Answer 13

horn

Question 14

the axons of motor neurons are found in the _____ roots of spinal nerves

Answer 14

ventral

Question 15

the ______ connects the gray matter on the left and right sides of the spinal cord

Answer 15

gray commissure

Question 16

the _____ in the gray commissure of the spinal cord contains cerebrospinal fluid and is continuous with the cavities of the brain

Answer 16

central canal

Question 17

the white matter of the spinal cord is divided into anterior, lateral, and posterior ____ that contain ascending and descending tracts

Answer 17

funiculi

Question 18

there are _____ pairs of cervical spinal nerves

Answer 18

8

Question 19

there are ___ pairs of sacral spinal nerves

Answer 19

5

Question 20

cervical spinal nerve pair C1 originates between the foramen magnum of the occipital bone and the ___

Answer 20

atlas

Question 21

spinal nerves L4 through S4 form a ____ plexus

Answer 21

sacral

Question 22

the gray matter of the spinal cord is divided into anterior, lateral, and posterior _____

Answer 22

horns

Question 23

the spinal cord ends inferior to L1 in a tapered point called the _____-

Answer 23

cauda equine

Question 24

the impulse over a motor neuron will lead to

Answer 24

an effector

Question 25

stretch reflex receptors are called

Answer 25

muscle spindles

Question 26

stretch reflexes include all of the following except the ___ reflex

Answer 26

withdrawal

Question 27

a withdrawal reflex could occur from

Answer 27

touching a hot object

Question 28

the calcaneal reflex response is

Answer 28

plantar flexion of the foot

Question 29

the quadriceps femoris is the effector muscle of the patellar reflex t/f

Answer 29

true

Question 30

the dorsal root of spinal nerves contain the axons of the motor neurons t/f

Answer 30

false

Question 31

the normal patellar reflex response involves extension of the leg at the knee t/f

Answer 31

true

Question 32

a reflex arc begins with the stimulations of a ____ at the dendrite end of a sensory neuron

Answer 32

receptor

Question 33

the effector muscle of the patellar reflex is the ____

Answer 33

quadriceps femoris

Question 34

the sensory stretch receptors (muscle spindles) of the patellar reflex are located in the ____ muscle

Answer 34

extensor

Question 35

the dorsal root of a spinal nerve contains the ____ neurons

Answer 35

motor

Question 36

the normal plantar reflex in _____ of toes

Answer 36

flexion

Question 37

stroking the sole of the foot in infants results in dorsiflexion and toes that spread apart, called the _____ reflex

Answer 37

babinski

Question 38

the primary olfactory interpretation center is located in the

Answer 38

inferior nose

Question 39

the cornea and the sclera compose the

Answer 39

outer layer

Question 40

we are able to see color because the eye contains

Answer 40

cones

Question 41

the perception of vision occurs in the

Answer 41

occipital lobe of the cerebrum

Question 42

which of the following is not part of the middle eye layer?

Answer 42

conjunctiva

Question 43

the area of our eye where visual acuity is best is the

Answer 43

fovea centralis

Question 44

the conjunctiva covers the superficial surface of the cornea t/f

Answer 44

true

Question 45

tears from the lacrimal gland eventually flow through a nasolacrimal duct into the nasal cavity t/f

Answer 45

true

Question 46

posterior five-sixths of middle (vascular) layer

Answer 46

choroid

Question 47

white part of outer (fibrous) layer

Answer 47

sclera

Question 48

transparent anterior portion of outer layer

Answer 48

cornea

Question 49

inner lining of eyelid

Answer 49

conjunctiva

Question 50

secretes tears

Answer 50

lacrimal gland

Question 51

fills posterior cavity of eye

Answer 51

vitreous humor

Question 52

area where optic nerve exits the eye

Answer 52

optic disc

Question 53

smooth muscle that controls that pupil size and light entering the eye

Answer 53

iris

Question 54

fills anterior and posterior chambers of the anterior cavity of the eye

Answer 54

aqueous humor

Question 55

contains photoreceptor cells called rods and cones

Answer 55

retina

Question 56

connects lens to ciliary body

Answer 56

suspensory ligament

Question 57

cause the lends to change shape

Answer 57

ciliary muscle

Question 58

as a person ages, the elasticity of the lens

Answer 58

decreases

Question 59

visual acuity is measured using a

Answer 59

Snellen eye chart

Question 60

the blind spot is located at the ___ of the eye

Answer 60

optic discs

Question 61

astigmatism results from a defect in the

Answer 61

curvature of the cornea or lens

Question 62

nearsightedness is also called myopia t/f

Answer 62

true

Question 63

what is meant by 20/70 vision

Answer 63

someone can see at 20 feet what people can see at 70 feet

Question 64

what is meant by 20/10 vision

Answer 64

someone can see at 20 feet what most can see at 10 feet

Question 65

what visual problem is created by astigmatism?

Answer 65

some parts of vision is blurred

Question 66

hearing is interpreted in the ____ lobe of the cerebrum

Answer 66

temporal

Question 67

sound loudness is measured in

Answer 67

decibels

Question 68

the middle ear bones articulate from tympanic membrane to oval window in which of the following sequences

Answer 68

malleus, incus, stapes

Question 69

the ____ test is done to assess possible conduction deafness by comparing bone and air conduction

Answer 69

rinne

Question 70

which of the following structures is part of the inner ear?

Answer 70

cochlea

Question 71

the pharyngotympanic tube connects the outer ear to the inner ear t/f

Answer 71

false

Question 72

the cochlear nerve serves as the hearing branch of the vestibulocochlear nerve t/f

Answer 72

true

Question 73

endolymph is located within the cochlear duct of the cochlea t/f

Answer 73

true