Midterm - Autonomic Nervous System

Question 1

A threat can be real or perceived, but the bodily responses are the _____.

Answer 1

same.

Question 2

Briefly explain the hierarchical control of organ function.

Answer 2

1Local organ regulation is modulated by ANS < Brainstem < Hypothalamus < Higher brain centers

Question 3

Who proposed that homeostasis was maintained by a system of negative feedback loop?

Answer 3

Walter Cannon.

Question 4

What is negative feedback?

Answer 4

When a process influences the operation of the process itself in such a way as to reduce changes.

Question 5

Example of negative feedback.

Answer 5

HPA axis. Brain (brainstem and hypothalamus) receive information about state of various organs, provides input back to those systems i.e. bidirectional system.

Question 6

What does the CNS consist of?

Answer 6

Central Nervous System: brain and spinal cord

Question 7

What does the PNS consist of?

Answer 7

Peripheral Nervous System: all other parts of nervous system.