Week 5

Question 1

Muscle spindles and tendon organs are examples of

Answer 1

proprioceptors

Question 2

Phantom pain, refers to the registering of pain in some place other than the site of actual

Answer 2

is due to the generation of nerve impulses in severed neurons after amputation of a limb

Question 3

Proprioceptors are located in the

Answer 3

muscles and tendons

Question 4

Sensory nerve fibers in the posterior column decussate at the level of the

Answer 4

medulla oblongata

Question 5

Somatic pain that arises from stimulation of skin receptors is classified as _____ pain.

Answer 5

superficial somatic

Question 6

The corticobulbar tracts convey nerve impulses that control movements of the

Answer 6

head and neck

Question 7

The organ that has the broadest area of referred pain is the

Answer 7

kidney

Question 8

The part of the body represented by the largest area of the somatosensory cortex is the

Answer 8

lips

Question 9

The type of pain felt from a puncture of a needle is called

Answer 9

fast pain

Question 10

What part of the brain receives information about planned activity, compares this with actual movements, and supplies corrective feedback signals to other parts of the brain?

Answer 10

cerebellum

Question 11

Which of the following is an example of rapid (phasic) adaptation?

a.
After too many stimuli, neurons start to fire uncontrollably
b.
Loss of ability to feel a toothache after 1 - 2 hours
c.
Hitting the snooze button when the alarm clock rings
d.
Loss of ability to smell the baking cake after a few minutes

Answer 11

d.

Loss of ability to smell the baking cake after a few minutes

Question 12

The brainstem does not include the:

Answer 12

cerebellum.

Question 13

Several “vital centers” are located in the:

Answer 13

medulla.

Question 14

The innermost layer of the meninges is the:

Answer 14

pia mater.

Question 15

The vomiting reflex is mediated by the:

Answer 15

medulla.

Question 16

The cerebellum acts with the _____ to produce skilled movement.

Answer 16

cerebrum

Question 17

The part of the brain that assists in the maintenance of balance is the:

Answer 17

cerebellum.

Question 18

Audition is a function of the _____ lobe.

Answer 18

temporal

Question 19

Which part of the brain releases the hormone melatonin?

Answer 19

Pineal gland

Question 20

Impulses from which system play a part in arousing or alerting the cerebrum?

Answer 20

Reticular activating system

Question 21

The main divisions of the central nervous system are the:

Answer 21

brain and spinal cord.

Question 22

The part(s) of the cerebrum associated with anger, fear, and sorrow is(are) the:

Answer 22

limbic system.

Question 23

The layer of the meninges that adheres to the outer surface of the brain is the:

Answer 23

pia mater.

Question 24

The part of the cerebrum integral to articulating words is:

Answer 24

Broca’s area.

Question 25

The corpus callosum connects the:

Answer 25

cerebral hemispheres.

Question 26

Which of the following is not a somatic sense? ``` a. Touch b. Pressure c. Proprioception d. All of the above are somatic senses. ```

Answer 26

d. | All of the above are somatic senses.

Question 27

The nervous system is divided into two major divisions, the:

Answer 27

central nervous system and the peripheral nervous system.

Question 28

There are _____ ventricles in the brain.

Answer 28

four

Question 29

What structure is the deepest groove in the cerebrum?

Answer 29

Longitudinal fissure

Question 30

Which groove is between the frontal and parietal lobes?

Answer 30

Central sulcus

Question 31

Cerebrospinal fluid is formed by filtration of blood in the:

Answer 31

choroid plexuses.

Question 32

William was recently involved in a serious automobile accident. As a result, he has had difficulty controlling his skeletal muscles and maintaining his balance. What part of the nervous system was most likely damaged?

Answer 32

Cerebellum

Question 33

Cerebrospinal fluid circulates through the ventricles, into the central canal and _____, and is absorbed back into the blood.

Answer 33

subarachnoid space

Question 34

The central sulcus divides the cerebrum into two hemispheres.

Answer 34

False

Question 35

The shallow grooves of the cerebrum are called sulci.

Answer 35

True

Question 36

A primary function of the reticular formation is to arouse or alert the cerebral cortex.

Answer 36

True

Question 37

Under normal brain functioning, activation of the reticular formation produces consciousness.

Answer 37

True

Question 38

The limbic system of the brain primarily functions in the production of speech.

Answer 38

False

Question 39

To describe sensory pathways as "crossed" refers to the fact that each side of the brain registers sensations from the opposite side of the body.

Answer 39

True

Question 40

Ascending tracts carry only sensory information, whereas descending pathways carry only motor information.

Answer 40

True

Question 41

The lateral ventricles are located within the cerebellum.

Answer 41

False

Question 42

The four large, fluid-filled spaces within the brain are called ventricles.

Answer 42

True

Question 43

Based on the system of naming tracts in the spinal cord, the corticospinal tract would be a descending tract.

Answer 43

True

Question 44

A lesion or tumor in the hypothalamus may cause overeating and result in substantial weight gain.

Answer 44

True

Question 45

The ependymal cells are glia cells that assist in the production of cerebrospinal fluid.

Answer 45

True

Question 46

The cerebellum coordinates both incoming and outgoing motor information.

Answer 46

True

Question 47

From superior to inferior, the brainstem is composed of the pons, midbrain, and medulla oblongata.

Answer 47

False

Question 48

Both the pons and medulla oblongata have centers that help regulate respiration.

Answer 48

True

Question 49

The cerebellum controls skeletal muscles to maintain balance.

Answer 49

True

Question 50

The hypothalamus plays an important role in maintaining proper body temperature.

Answer 50

True

Question 51

The hormone released by the hypothalamus, melatonin, helps regulate the biological clock.

Answer 51

False

Question 52

The thalamus acts as a relay station for ascending sensory impulses.

Answer 52

True

Question 53

Nerve impulses over the _____ nerve cause increased peristalsis and decreased heart rate.

Answer 53

vagus

Question 54

The spinal nerves are connected to the spinal cord and consist of _____ pairs.

Answer 54

31

Question 55

Spinal nerves are _____ fibers.

Answer 55

motor and sensory

Question 56

A mixed nerve is one that:

Answer 56

carries both sensory and motor fibers.

Question 57

Damage to the _____ nerve could make the diaphragm unable to function.

Answer 57

phrenic

Question 58

The phrenic nerve is found in the _____ plexus.

Answer 58

cervical

Question 59

The peripheral nervous system includes:

Answer 59

only cranial nerves, spinal nerves, and their branches.

Question 60

The peripheral nervous system includes _____ nerves. ``` a. autonomic b. sensory c. somatic d. all of the above ```

Answer 60

d. | all of the above

Question 61

The nerve commonly called the vagus nerve is the _____ cranial.

Answer 61

tenth

Question 62

Afferent nerves or fibers are found only in the _____ nervous system. ``` a. sensory b. autonomic c. central d. Both A and B are correct. ```

Answer 62

d. | Both A and B are correct

Question 63

Efferent nerves or fibers are found only in the _____ system. ``` a. central b. autonomic c. somatic d. Both B and C are correct. ```

Answer 63

d. | Both B and C are correct.

Question 64

In a healthy adult, a well-placed tap on the knee will result in a:

Answer 64

stretch of the tendon, the quadriceps femoris, and thereby stimulation of the muscle spindles.

Question 65

What is the difference between a somatic reflex and an autonomic reflex?

Answer 65

A somatic reflex is caused by contraction of skeletal muscles, whereas an autonomic reflex consists of contraction of smooth or cardiac muscle or secretions of glands.

Question 66

Any disease or injury that damages the spinal cord between the first and fifth cervical segments also paralyzes the phrenic nerve and therefore the diaphragm.

Answer 66

True

Question 67

A dermatome is the skin surface area supplied by a single spinal nerve.

Answer 67

True

Question 68

Skeletal muscles are somatic effectors.

Answer 68

True

Question 69

The peripheral nervous system includes cranial nerves.

Answer 69

True