Human A&P Exam 5

1.

1 point

A conduction pathway consists of a:

ganglion and a nucleus.

tract and a nucleus.

nerve and a tract.

nerve and effector.

2.

1 point

The function of upper motor neurons is to:

directly excite skeletal muscle cells.

excite or inhibit lower motor neurons.

excite motor portions of the thalamus.

excite or inhibit skeletal muscle cells.

3.

1 point

Which is not true about the somatic nervous system (SNS)?

The SNS is under voluntary control.

The SNS is part of both the CNS and the PNS.

The SNS innervates skeletal muscle fibers.

The SNS is activated by visceral sensory neurons.

The SNS uses motor and sensory neurons.

4.

1 point

The major pathway of communication between the right and left hemisphere is the:

hypothalamus

cerebral sulci

corpus callosum

cerebral gyri

5.

1 point

Olfaction is the sense of

taste

pressure

touch

smell

6.

1 point

Interoceptors

detect stimuli within the body.

detect stimuli due only to physical deformation.

are located just in the skin.

detect changes in organ distension.

7.

1 point

The neurons that directly innervate skeletal muscles are called:

lower motor neurons

upper motor neurons

second order nerons

first order neurons

8.

1 point

Which part of the brain contains the arbor vitae?

medulla oblongata

pons

cerebellum

cerebrum

9.

1 point

Our ability to precisely locate a stimulus is ________ proportional to receptive field size.

inversely

directly

10.

1 point

Which cranial nerves are associated with the parasympathetic division of the ANS?

a: III
b: IV
c: V
d: VII
e: IX
f: X
g: XII

a d e f

a c d g

c d f g

b c d e

b e f g

11.

1 point

The brain region that exerts significant control over the endocrine system is the:

thalamus

pons

hypothalamus

epithalamus

12.

1 point

Changes in the external and internal environment are ________ that are detected by the sensory system.

receptors

adaptations

sensations

stimuli

13.

1 point

The ______________ division has short axons with relatively few ranches and ganglia located close to or within the wall of the organ.

sympathetic

parasympathetic

14.

1 point

Hair cells within the inner ear are sensory receptors for hearing. They exend stereocilia into the

tectorial membrane

scala vestibuli

helicotrema

spiral ganglia

15.

1 point

Which statement accurately compares the motor systems of the somatic nervous system (SNS) and autonomic nervous system (ANS)?

The ANS does not have ganglia for its motor neurons but the SNS does.

Neither the SNS nor the ANS house their motor neurons in ganglia.

Both the SNS and ANS house their motor neurons in ganglia.

The SNS does not have ganglia for its motor neurons but the ANS does.

16.

1 point

Which division functions to conserve energy and replenish the supply of nutrients?

Somatic

Parasympathetic

Sympathetic

17.

1 point

Our taste sensations include all of these except

bitter

sour

umami

pepper

18.

1 point

The knee jerk reflex (when the quadriceps muscles contract after the patellar tendon is tapped) is the work of the:

somatic nervous system

autonomic nervous system

19.

1 point

Each of the following is an auditory ossicle in the middle ear, except

stapes

malleus

tympanium

incus

20.

1 point

Which is not an effector innervated by the autonomic nervous system?

Smooth muscle

No exceptions; All are innervated by the ANS

Cardiac muscle

Skeletal muscle

Glands

21.

1 point

The portion of the brain involved primarily with vision is the:

occipital lobe

frontal lobe

parietal lobe

temporal lobe

22.

1 point

Which space associated with the spinal cord meninges contains cerebrospinal fluid?

Subdural space

Epidural space

Epiarachnoid space

Subarachnoid space

23.

1 point

The region of the retina that has the highest concentration of cones is the

optic disc

fovea centralis

amacrine layer

macula lutea

24.

1 point

What is the thin strand of pia mater that helps to anchor the spinal cord to the coccyx?

Terminus coccyx

Conus medullaris

Cervical enlargement

Filum terminale

25.

1 point

Within each semicircular canal, the expanded region is called the

otolith

cupula

ampulla

crista ampullaris

26.

1 point

The cerebral cortex consists of ______ matter.

gray

white

27.

1 point

Which secondary brain vesicle forms the portion of the adult brain that includes the epithalamus, thalamus, and hypothalamus?

Diencephalon

Telencephalon

Myelencephalon

Mesencephalon

28.

1 point

Which division functions to increase alertness and direct bodily responses in stressful situations?

Sympathetic

Parasympathetic

29.

1 point

Maintaining homeostasis at rest, conserving energy and replenishing nutrient stores are functions of the:

parasympathetic division

sympathetic division

30.

1 point

The _______________ division has long axons with many branches and ganglia located in the sympathetic trunk or prevertebral ganglia.

parasympathetic

sympathetic

31.

1 point

The reticular formation is an area of the brain that:

is motor in function

is sensory in function

has both sensory and motor functions

32.

1 point

We lack awareness of many of our bodies' systems for maintaining homeostasis. The sensations, movements, and secretions of organs such as the heart and intestines are
governed by the:

somatic nervous system

autonomic nervous system

33.

1 point

On a sunny day, the slow return of your sensitivity to low light is called

bleaching

light adaptation

retinal conversion

dark adaptation

34.

1 point

A photopigment is composed of a protein called _____ and a light-absorbing molecule called retinal.

opsin

reopsin

transferin

maxopsin

35.

1 point

The location of conscious thought processes and the origin of all complex intellectual functions is the:

hypothalamus

cerebellum

cerebrum

pons

36.

1 point

By definition, transducers:

are electrical devices that do not work with biological systems.

transmit signals toward the central nervous system.

transmit signals away from the central nervous system.

change one form of energy into another form.

37.

1 point

What is the correct order for the parts of the spinal cord, from superior to inferior?

Cervical - thoracic - sacral - coccygeal - lumbar

Cervical - thoracic - lumbar - sacral - coccygeal

Thoracic - cervical - lumbar - coccygeal - sacral

Thoracic - lumbar - sacral - cervical - coccygeal

38.

1 point

The shallow depressions between folds on the surface of the brain are called:

ventricles

gyri

syncitia

sulci

39.

1 point

Motor pathways are _________ tracts that control _________.

ascending, affectors

descending, effectors

descending, affectors

ascending, effectors

40.

1 point

Which of the following is correct about the autonomic nervous system (ANS)?

The ANS is part of both the CNS and the PNS.

ANS motor pathways always include two neurons.

All of these are correct

ANS motor neurons innervate cardiac muscle fibers, smooth muscle fibers, and glands.

ANS functions are involuntary.