Question

Cindy was walking to her car when suddenly she heard footsteps approaching, before she could turn around, she found herself in a scary situation. There was a man holding a gun to her head and asking for her wallet. Her heart was racing, and she froze.

1. What branch of the autonomic nervous system did her reaction display?

A) Central Nervous system

B) Parasympathetic

C) Sympathetic

D) Visceral

2. Alex decided to cook some enchiladas for dinner, he left the oven on to heat up then left to grab some ingredients off the table. When he returned, he grabbed the handle to the oven with his bare hand and screamed in pain. He had burned his hand pretty bad. What receptors did he trigger in his hand and what type of receptors are they?

A) Polymodal nociceptors

B) Chemical nociceptors

C)Mechanical nociceptors

D) All of the above

3.Brian was at the gym working out lifting heavy weights. His primary muscle focus was biceps. What is happening to the muscle spindles when he is contracting his bicep?

A) It is signaling the muscle spindle not to stretch

B) It is inhibiting the antagonist muscle from being stretched

C) it is signaling the muscle spindle to stretch

D) Both b and c

Answer 1

1.C)SYMPATHETIC NERVOUS SYSTEM

During scary situations or crisis,the sympathetic nervous system direct s the body's response.They controls the body's sudden involuntary response to such situations by increasing heart beat, sending blood to muscles etc.An alertness is created in the body.

2.A)POLYMODAL NOCICEPTOR.

Polymodal nocicpetors react to high intensity stimuli.This includes chemical,mechanical and thermal.

For eg,high temperature above 40℃.

Chemical nociceptors react to chemical substances and mechanical nociceptors react to situations like pinching,cutting etc.

3.D)BOTH B AND C

When he contracts his biceps two things happens to the muscle spindles:

◆They send signal to its muscle spindle to stretch

◆It is inhibiting the antagonist muscle from being stretched.