Question

In: Nursing

1. Imagine you are being chased through the woods by a hungry bear. a. Which nervous...

1. Imagine you are being chased through the woods by a hungry bear.

a. Which nervous system would engage (parasympathetic or sympathetic)?

Why is this?

b. What would be the effects of this system on your:

i. Eyes

ii. Skin

iii. Respiratory System

iv. d. Skeletal muscles

c. Describe the neurotransmitter family that is activated in this situation.

2. Imagine that you are home with the flu.

a. Which nervous system would engage? Why is this?

b. What would be the effects of this system on your:

i. Eyes

ii. Skin

iii. Respiratory System

iv. Skeletal muscles

c. Describe the neurotransmitter family that is activated in this situation.

Expert Solution

1a . sympathetic nervous system.

A threat stimulus, such as the sight of a predator, triggers a fear response in the amygdala, which activates areas involved in preparation for motor functions involved in fight or flight. It also triggers release of stress hormones and sympathetic nervous system

b. 1. Eyes:when presented with a threatening stimuli that activates the fight-or-flight response, this innervation contracts the muscle and dilates the pupil, thus temporarily letting more light reach the retina.

Skin: increased sweating, cold and clammy skin

c. Respiratory ststem:can accelerate heart rate, widen bronchial passages, increased respiration.

d. Increased blood flow to skeletal muscles

C. neurotransmitter dopamine

2a. As you are in rest parasympathetic nervous system is active

b. 1. Eyes:parasympathetic activity causes smooth muscle contraction. The contraction of circular muscles constricts the pupil while contraction of ciliary muscles cause accommodation for near vision

Skin: warm skin

c. Respiratory ststem:slows heart rate, decreasespiration.

d. decreased blood flow to skeletal muscles

C. neurotransmitter serotonin

Nightingale answered 2 years ago

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