Ch.16 Notes/HW questions

Question 1

Sensation is the conscious or subconscious _____ of changes in the external or internal

Answer 1

awareness; environment

Question 2

____ are sensory receptors located in blood vessels and visceral organs, whose signals are not usually consciously perceived

Answer 2

Interoceptors

Question 3

____ would detect irritation on the skin if you didn’t wear gloves while cleaning with bleach

Answer 3

nociceptors

Question 4

After initially detecting the perfume on your partner, over time you would cease to notice it due to

Answer 4

adaptation

Question 5

____ convey impulses from lamellated corpuscles and synapse with another neuron in the posterior gray horn of the spinal cord

Answer 5

first oder neurons

Question 6

Which stimulus does not stimulate the reticular activating system?

Answer 6

smoke

Question 7

Order of the process of sensation

Answer 7

1. stimulation of sensory receptors
2. Transduction of the stimulus
3. Generation of nerve impulses
   4.Integration of sensory input

Question 8

The descending pathway

Answer 8

consists of upper and lower motor neurons

Question 9

Sequence of events for the control of body movement

Answer 9

1. beginning of voluntary movement
   2.cerebral cortex’s premotor areas
2. stimulation of upper motor neurons
3. descending tracts
4. stimulation of lower motor neurons
   6.skeletal muscle contraction

Question 10

When distinguishing among the somatic pathways on the names, one that begins with “spino” will

Answer 10

start in the spinal cord and terminate in the brain, carrying sensory information

Question 11

Which of the following somatic sensations has a an encapsulated nerve ending as its sensory receptor ?

Answer 11

pressure

Question 12

Which order crosses from one of the body to allow the opposite side of the brain to detect the sensation?

Answer 12

second

Question 13

The common location deep in the brain where sensory pathways of secondary neurons synapse with tertiary neurons to transfer information to various areas of the primary somatosensory cerebral cortex is the

Answer 13

thalamus

Question 14

If spinal cord injury occurred to the spinothalamic tract:

Answer 14

contralateral cutaneous sensation would be lost

Question 15

The anatomical structure responsible for monitoring the change in length of a muscle is called:

Answer 15

muscle spindle

Question 16

What is not true about first order neurons ?

Answer 16

their axons decussate

Question 17

The medial lemniscus pathway gets its name from the location of the axons of

Answer 17

second order neurons ascending through the midbrain

Question 18

Which of the following is not a function of the cerebellum ?

Answer 18

initiated movement

Question 19

The anterior and posterior spinocerebellar tracts are concerned with transmitting information about

Answer 19

Proprioception

Question 20

The first-order neurons in the trigeminothalamic pathway synapse with second order neurons in the ____

Answer 20

pons and medulla oblongata

Question 21

The integration center for sensations that are consciously perceived (like vision, smell, taste, and pain) are found in the

Answer 21

cerebral cortex

Question 22

Which of the following is a receptor for special receptor for a special sense?

Answer 22

hair cells