The Peripheral Nervous System - Chapter 13 part 2

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1

Mechanoreceptors are activated by

Sound

2

Thermoreceptors are activated by

hot or cold

3

Photoreceptors are activated by

light on the retina

4

Chemoreceptors are activated by

Smell

5

Nociceptors are activated by

Pain

6

Meissner's corpuscles are

surrounded by Schwann cells

7

Merkel discs are located in the

deep epidermis

8

Pacinian corpuscles are located in the

deep dermis and subcutaneous tissue

9

Ruffini's corpuscles are located in the

dermis and joint capsules

10

Ganglia associated with afferent fibers are called

sensory neuron cell bodies

11

Ganglia associated with efferent fibers are called

autonomic motor neurons

12

The delicate layer of loose connective tissue surrounding each axon is called

endoneurium

13

Coarse connective tissue which binds groups of fibers into bundles called fascicles is called

Perineurium

14

The tough fibrous sheath enclosing all fascicles is called

epineurium

15

The site of stimulus action is called

receptor

16

What transmits afferent impulses to the CNS?

Sensory neurons

17

In simple refex arcs, it can be a single synapse between sensory neuron and a motor neuron or may have multiple synapses with chains of interneurons. What is it?

integration center

18

Conducts efferent impulses from the integration center to an effector organ

motor neuron

19

Muscle fiber or gland cell that responds to the efferent impulses by contracting or secreting is called what?

effector

20

Ability to detect that a stimulus has occurred and is the simplest level of perception is called

perceptual detection

21

Ability to detect how much of the stimulus is acting on the body is called

magnitude estimation

22

Ability to identify the site or pattern of stimulation is called

spatial discrimination

23

Mechanism by which a neuron or circuit is tuned to one feature in preference to others is called

feature abstraction

24

Ability to differentiate the sub-modalities of a particular sensation is called

quality discrimination

25

Ability to take in the scene around us and recognize a familiar pattern, an unfamiliar one, or one that has special significance for us is called

pattern recognition

26

The olfactory nerve controls what?

sense of smell

27

The optic nerve controls what?

sensory nerve of vision

28

The oculomotor nerve controls what?

supplies four of the six extrensic eye muscles

29

The trochlear nerve controls what?

innervates an extrinsic eye muscle that loops through a pulley-shaped ligament in the orbit

30

The trigeminal nerve controls what?

supplies sensory fibers to the face and motor fibers to the chewing muscles

31

The abducens nerve controls what?

controls the extrinsic eye muscle that abducts the eyeball

32

The facial nerve controls what?

innervates muscles of facial expression

33

The vestibulocochlear nerve controls what?

sensory nerve for hearing and balance

34

The glossopharyngeal nerve controls what?

innervates the tongue and pharynx

35

The vagus nerve controls what?

innervates organs in the thorax and abdomen

36

The accessory nerve controls what?

considered accessory to the vagus nerve. Was formally called the spinal accessory nerve

37

The hypoglossal nerve controls what?

innervates some tongue-moving muscles

38

Stretched and excited by external force or by activating motor neurons, causing muscles to contract is called _____ reflexes.

Stretch reflexes

39

Initiated by a painful stimulus and causes automatic withdrawal of the threatened part is called ____ reflex.

Flexor reflex

40

Causes muscle relaxation and lengthening in response to contraction is called ____ reflex.

Golgi tendon reflex

41

A complex spinal reflex important in maintaining balance is called ____ reflex.

Crossed extensor reflex

42

Tests the integrity of the spinal cord from L4 to S2; causes a downward flexion of the toes is called ____ reflex.

Plantar reflex

43

The triceps brachii muscle is controlled by what nerve?

Radial nerve

44

The biceps brachii muscle is controlled by what nerve?

Musculocutaneous nerve

45

The flexor carpi ulnaris muscle is controlled by what nerve?

Ulnar nerve

46

The flexor carpi radialis muscle is controlled by what nerve?

Median nerve

47

The deltoid muscle is controlled by what nerve?

Axillary nerve