/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 23 Select the correct answer and wr... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Select the correct answer and write it on the line provided. Norepinephrine is secreted by the __________ ___________. adrenal cortex \(\quad\) adrenal medulla \(\quad\) pancreatic islets \(\quad\) pituitary gland

Short Answer

Expert verified
The correct answer is 'adrenal medulla.'

Step by step solution

01

Understand the Role of Norepinephrine

Norepinephrine is a hormone and neurotransmitter involved in the body's response to stress. It is part of the 'fight or flight' response, which prepares the body to take action in stressful situations.
02

Identify the Secretory Gland

Norepinephrine is secreted by the adrenal medulla, which is part of the adrenal glands situated on top of the kidneys. These glands are responsible for releasing hormones like adrenaline and norepinephrine in response to stress.
03

Eliminate Incorrect Options

Review each of the given options: - **Adrenal Cortex**: Secretes corticosteroids and does not produce norepinephrine. - **Adrenal Medulla**: Correct choice, as it secretes norepinephrine. - **Pancreatic Islets**: Secrete insulin and glucagon, not norepinephrine. - **Pituitary Gland**: Regulates various hormonal functions but does not secrete norepinephrine.
04

Select the Correct Answer

Based on the information, the correct answer is 'adrenal medulla,' as it is responsible for secreting norepinephrine.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Adrenal Medulla
The adrenal medulla is a core component of the adrenal glands located above the kidneys. This section of the gland is crucial for the production and secretion of the catecholamines: adrenaline and norepinephrine.
These hormones are pivotal in managing the body's stress response. Unlike its counterpart, the adrenal cortex, which focuses on corticosteroids, the medulla's role is solely tied to these stress hormones.
When faced with a threat or stressor, the adrenal medulla kicks into action. It releases norepinephrine, helping the body react swiftly to keep you safe. This process is automatic and happens in seconds, highlighting the efficiency and critical nature of the adrenal medulla in stress scenarios.
Hormonal Response
Hormonal response refers to how hormones in our body react and adapt to external changes, especially stress. During stressful or emergency situations, the body needs to prepare to act fast. Hormones like norepinephrine and adrenaline rush into the bloodstream from the adrenal medulla.
They significantly influence various physiological functions, including:
  • Increasing heart rate
  • Elevating blood pressure
  • Boosting energy availability
These hormones serve as messengers, triggering these rapid adjustments to help the body face potential threats. This rapid hormonal response is essential for maintaining equilibrium and enhancing our survival ability.
The speed and effectiveness of the hormonal response demonstrate the body's remarkable ability to adapt quickly to changing conditions.
Fight or Flight Response
The fight or flight response is a primitive and instinctual reaction triggered by stress. This survival mechanism prepares the body to either confront or flee from a threat. It revolves significantly around the adrenal medulla and its secretion of norepinephrine.
When a threat is perceived:
  • The heart rate increases to pump more blood to muscles and organs.
  • Respiratory rate increases to provide more oxygen.
  • Glucose is released for immediate energy.
Norepinephrine plays a foundational role in this process, ensuring the body is ready for immediate action. This response, while ancient, is still applicable today in modern stress scenarios, making it an essential aspect of how humans cope with stress. Understanding this response can help individuals better manage stressful situations by recognizing the bodily signals and the underlying processes at play.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Write the correct answer on the line provided. Mrs. Wei's symptoms included chronic, worsening fatigue and muscle weakness, loss of appetite, and weight loss because her adrenal glands do not produce enough cortisol. Her doctor diagnosed this condition as ________ _______.

Write the correct answer on the line provided. Linda Thomas was diagnosed as having a/an ________. This is a benign tumor of the pancreas that causes hypoglycemia by secreting insulin.

These terms are not found in this chapter; however, they are made up of the following familiar word parts. If you need help in creating the term, refer to your medical dictionary. $$\begin{array}{cc} \text { endo- } & \text { adren/o } & \text { -emia } \\ \text { crin/o } & \text { -itis } \\ \text { insulin/o } & \text { -megaly } \\ \text { pancreat/o } & \text { -ology } \\ \text { pineal/o } & \text { -oma } \\ \text { thym/o } & \text { -otomy } \\ \text { thyroid/o } & \text { -pathy } \end{array}$$ The term meaning any disease of the adrenal glands is _______

These terms are not found in this chapter; however, they are made up of the following familiar word parts. If you need help in creating the term, refer to your medical dictionary. $$\begin{array}{ll} \text { poly- } & \text { encephal/o } & \text { -algia } \\ \text { mening/o } & \text { -itis } \\ \text { myel/o } & \text { -malacia } \\ \text { neur/o } & \text { -oma } \\ & \text { -pathy } \end{array}$$ many _______ thyroid/o

Select the correct answer and write it on the line provided. The hormone _______ works with the parathyroid hormone to regulate calcium levels in the blood and tissues. aldosterone \(\quad\) calcitonin \(\quad\) glucagon \(\quad\) leptin

See all solutions

Recommended explanations on Biology Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.