Writing in Biology Write a short story about a person who...

Name: Problem 37, Chapter 33: Glencoe Biology
Uploaded: 2020-06-29T02:55:19-08:00
Duration: 1 min 8 s
Channel: Sam Limsuwannarot
Description: Writing in Biology Write a short story about a person who heard a loud noise and became afraid. Include in your story events that might occur in each division of the nervous system during such an experience.

Writing in Biology Write a short story about a person who heard a loud noise and became afraid. Include in your story events that might occur in each division of the nervous system during such an experience.

Key Concepts

Parasympathetic Nervous System

Also a component of the ANS, the parasympathetic nervous system works to return the body to a state of calm after the stress has passed. It helps slow down the heart rate, lower blood pressure, and promote relaxation, counterbalancing the effects of the sympathetic response.

Sympathetic Nervous System

As a part of the ANS, the sympathetic nervous system is activated during a 'fight-or-flight' response. It prepares the body to deal with a threat by increasing heart rate, releasing adrenaline, and enhancing alertness so that rapid reactions can occur.

Autonomic Nervous System (ANS)

The ANS regulates involuntary body functions, such as heartbeat, digestion, and respiratory rate, especially during stress. It plays a crucial role in the body’s initial response to fear and in maintaining homeostasis during and after a stressful event.

Somatic Nervous System

A branch of the PNS, the somatic nervous system manages voluntary control over skeletal muscles. In a threatening situation, it is involved in initiating quick, conscious actions such as moving away or preparing to flee from danger.

Peripheral Nervous System (PNS)

The PNS comprises all the nerves outside the brain and spinal cord that connect the CNS to sensory receptors and muscles. It rapidly transmits the auditory signal from the ears to the CNS and carries motor commands back to initiate a physical response.

Central Nervous System (CNS)

The CNS, consisting primarily of the brain and spinal cord, is responsible for processing sensory information, integrating responses, and generating emotions such as fear. It interprets the loud noise as a potential threat and coordinates the overall reaction by activating relevant body systems.

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