Nervous System

Question 1

Somatic Sensory Pathways

Answer 1

3 neuron relay system

2nd order neuron crosses over

Question 2

Somatic Motor Pathway

Answer 2

2 neuron relay system

Upper motor neuron crosses over

Question 3

Medulla oblongata

Answer 3

Functions:

• relays sensory signals for certain somatic sensations from the spinal cord to the thalamus
• helps control breathing, heart rate and Blood vessel diameter
• controls reflexes related to swallowing, sneezing, coughing, and vomiting

Question 4

Pons

Answer 4

Functions:

• relays motor signals from cerebral cortex to cerebellum
• helps control breathing

Question 5

Midbrain

Answer 5

Functions:

• generates motor reflex responses to visual and auditory stimuli
• assists in the control of voluntary movements

Question 6

Hypothalamus

Answer 6

• connected to pituitary gland

Functions:

• regulates release of hormones from pituitary gland
• regulates activity in ANS
• regulates emotions, behaviour, hunger, thirst, and body temp

Question 7

Thalamus

Answer 7

Functions:

• relays sensory impulses from the spinal cord, brain stem, and cerebellum to the cerebral cortex
• helps maintain consciousness

Question 8

Cerebellum

Answer 8

Functions:

• monitors and adjusts voluntary movements
• assists in coordination of complex movements
• regulates muscle tone, posture, and balance

Question 9

Occipital Lobe

Answer 9

Functions:

• perception of visual sensations
• recognition of visual stimuli

Question 10

Temporal Lobe

Answer 10

Functions:

• perception of auditory sensations
• perception of olfactory sensations
• recognition of auditory stimuli
• recognition of faces

Question 11

Parietal Lobe

Answer 11

Functions:

• perception of somatic sensations
• receives and integrates information from a variety of sensory inputs (ex. Somatic, visual, smell)
• object recognition based in touch

Question 12

Frontal Lobe

Answer 12

Functions:

• initiation of voluntary movements
• “memory bank”
• “higher functions” (learning, personality, mood)
• articulation of speech
• recognition of odours

Question 13

Cerebrum

Answer 13

• contains the four lobes

- largest portion of brain

Question 14

Tibial nerve innervates?

Answer 14

Posterior leg muscles

Question 15

Sciatic nerve innervates?

Answer 15

Posterior thing muscles

Question 16

Sacral plexus

Answer 16

L4-S4 spinal nerves

Question 17

Obturator Nerve innervates?

Answer 17

Medial thigh muscles

Question 18

Femoral nerve innervates?

Answer 18

Anterior thigh muscles

Question 19

Lumbar plexus

Answer 19

L1-L4 spinal nerves

Question 20

Ulnar nerve innervates?

Answer 20

Anterior forearm muscles

Question 21

Median nerve innervates?

Answer 21

Anterior forearm muscles

Question 22

Radial never innervates?

Answer 22

Posterior arm and forearm muscles

Question 23

Musculocutaneous nerve innervates?

Answer 23

Anterior arm muscles

Question 24

Axillary nerve innervates?

Answer 24

Deltoid and teres minor

Question 25

Brachial plexus

Answer 25

C5-T1 spinal nerves

Question 26

Cervical plexus

Answer 26

C1-C5 spinal nerves