PNS

Question 1

Sensory/afferent pathway function

Answer 1

sends info up to the brain to be processed via dorsal root of spinal cord

Question 2

Motor/efferent pathway function

Answer 2

sends signals down to muscles and organs, movement and posture, via ventral root of spinal cord

Question 3

Innervated organs of the sympathetic nervous system

Answer 3

Skin, sweat glands, eyes, heart, lungs, gut, skeletal muscle

Question 4

Innervated organs of the parasympathetic nervous system

Answer 4

Eye, heart, lungs, guts, skeletal muscle

Question 5

Spinal nerves:

1. Where are they attached to?
2. How many pairs are there?
3. What are the 4 divisions?

Answer 5

1. Spinal cord
2. 31 pairs of spinal nerves
3. Cervical, thoracic, lumbar, sacral

Question 6

What are the 5 components of a reflex arc?

Answer 6

1. Sensory receptor - responds to a stimulus by producing a generator or receptor potential
2. Sensory neuron - axon conducts impulses from receptor to integrating centre
3. Integrating centre - 1 or more regions in CNS that relay impulses from sensory to motor neurons
4. Motor neuron - axon conducts impulses from integrating centre to effector
5. effector - muscle or gland that responds to motor nerve impulses

Question 7

Where is short term/working memory processed?

Answer 7

Primarily cortical areas (e.g., prefrontal cortex)

Question 8

Where is long-term/implicit/declarative memory processed?

Answer 8

Hippocampus and cortical areas

Question 9

What is neuroplasticity?

Answer 9

modification of (new or old) neuronal connections