a&p quiz 6 Flashcards Preview

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Flashcards in a&p quiz 6 Deck (73):
1

the _____ is the most superficial membrane of the meninges

dura mater

2

the inferior end of the adult spinal cord terminates

inferior to L1

3

the dorsal root of spinal nerves contains

sensory neurons

4

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

lateral funiculus

5

the central canal of the spinal cord is located within the

gray comissure

6

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

t/f

true

7

there are right pairs of cervical spinal nerves

t/f

true

8

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

t/f

false

9

the spinal cord gives rise to 31 pairs of _____

spinal nerves

10

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

cervical

11

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

lumbar

12

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

median suculus

13

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

horn

14

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

ventral

15

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

gray commissure

16

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

central canal

17

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

funiculi

18

there are _____ pairs of cervical spinal nerves

8

19

there are ___ pairs of sacral spinal nerves

5

20

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

atlas

21

spinal nerves L4 through S4 form a ____ plexus

sacral

22

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

horns

23

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

cauda equine

24

the impulse over a motor neuron will lead to

an effector

25

stretch reflex receptors are called

muscle spindles

26

stretch reflexes include all of the following except the ___ reflex

withdrawal

27

a withdrawal reflex could occur from

touching a hot object

28

the calcaneal reflex response is

plantar flexion of the foot

29

the quadriceps femoris is the effector muscle of the patellar reflex

t/f

true

30

the dorsal root of spinal nerves contain the axons of the motor neurons

t/f

false

31

the normal patellar reflex response involves extension of the leg at the knee

t/f

true

32

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

receptor

33

the effector muscle of the patellar reflex is the ____

quadriceps femoris

34

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

extensor

35

the dorsal root of a spinal nerve contains the ____ neurons

motor

36

the normal plantar reflex in _____ of toes

flexion

37

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

babinski

38

the primary olfactory interpretation center is located in the

inferior nose

39

the cornea and the sclera compose the

outer layer

40

we are able to see color because the eye contains

cones

41

the perception of vision occurs in the

occipital lobe of the cerebrum

42

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

conjunctiva

43

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

fovea centralis

44

the conjunctiva covers the superficial surface of the cornea

t/f

true

45

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

t/f

true

46

posterior five-sixths of middle (vascular) layer

choroid

47

white part of outer (fibrous) layer

sclera

48

transparent anterior portion of outer layer

cornea

49

inner lining of eyelid

conjunctiva

50

secretes tears

lacrimal gland

51

fills posterior cavity of eye

vitreous humor

52

area where optic nerve exits the eye

optic disc

53

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

iris

54

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

aqueous humor

55

contains photoreceptor cells called rods and cones

retina

56

connects lens to ciliary body

suspensory ligament

57

cause the lends to change shape

ciliary muscle

58

as a person ages, the elasticity of the lens

decreases

59

visual acuity is measured using a

Snellen eye chart

60

the blind spot is located at the ___ of the eye

optic discs

61

astigmatism results from a defect in the

curvature of the cornea or lens

62

nearsightedness is also called myopia

t/f

true

63

what is meant by 20/70 vision

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

64

what is meant by 20/10 vision

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

65

what visual problem is created by astigmatism?

some parts of vision is blurred

66

hearing is interpreted in the ____ lobe of the cerebrum

temporal

67

sound loudness is measured in

decibels

68

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

malleus, incus, stapes

69

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

rinne

70

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

cochlea

71

the pharyngotympanic tube connects the outer ear to the inner ear

t/f

false

72

the cochlear nerve serves as the hearing branch of the vestibulocochlear nerve

t/f

true

73

endolymph is located within the cochlear duct of the cochlea

t/f

true