BIOLOGY -CONNECT ACCESS
14th Edition
ISBN: 9781266239397
Author: Mader
Publisher: MCG
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Textbook Question
Chapter 40, Problem 1TC
Even though some of their functions overlap, why is it advantageous for animals to have both a nervous system and an endocrine system?
Expert Solution & Answer
Summary Introduction
To determine:
The advantages of animals having both a nervous system and an endocrine system.
Introduction:
The glands of endocrine system release their content directly into the blood circulation and regulate other organs of the body. They have no ducts. Thus, they are called as the ductless glands. Pituitary gland, thyroid gland and adrenal gland are some of its examples. The nervous system is a network of nerve cells that transmits nerve impulses between the brain and spinal cord to the different body parts.
Explanation of Solution
Humans have a complex physiological system and thus require a various way to control and coordinate the body functions. Also the human body should respond appropriately to various internal stimuli which influence the functioning of both nervous system and endocrine system.
The control of internal organs is due to both the nervous system and the endocrine system. They are involved in the subconscious control of the brain. The brain receives sensory signals from internal organs and controls the activity of muscles and endocrine system releases hormones by signals sent by the brain that regulate the metabolism, growth and development of the body.
Both systems use subconscious control of internal environment which is done by the reflex action that involves hypothalamus and medulla oblongata.
Conclusion
The brain receives sensory signals and controls the activity of muscles and endocrine system releases hormones that regulate the metabolism, growth and development of the body.
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Students have asked these similar questions
Many functions in the body are controlled by hormones – chemical signals that are secreted by one organ or tissue, but have effects in multiple areas.
Calcium can enter the body from what we eat and drink. It circulates through blood and is used by many organs, so it’s level is carefully regulated. The amount of calcium in the blood is maintained at a relatively constant level by two hormones; for our purposes, we’ll just call them hormone A and hormone B. Hormone A is secreted by the parathyroid gland and it functions to increase blood calcium levels. Hormone B is secreted by parafollicular cells (C cells) in the thyroid gland and it functions to decrease blood calcium levels.
Calvin, a teenage boy, begins eating ChocoRite™ Calcium Bites, a very tasty calcium supplement. He likes them so much that he ends up eating a whole package one afternoon.
1.Where does hormone B come from?
A)From the calcium regulatory cells
B)From the parathyroid gland
C)From calcium supplements,…
Which of the following
statements is not true of the
endocrine system?
Select one:
A. Most of its components
are not anatomically
connected, unlike most
other systems of the
body.
O B. It is one of two major
regulatory systems of
the body
O C. It is an important
regulator of
homeostatic
mechanisms.
O D. The nervous and
endocrine systems
often overlap in
function.
O E. It is composed of glands
that secrete chemical
messengers through
ducts into the blood.
Which of these homeostatic mechanisms in the body are examplesof positive feedback, and which are examples of negative feedback?Why?a. The adrenal glands produce epinephrine in response to a hormone produced by the pituitary gland in times of stress; the pituitary gland senses the epinephrine in the blood and stopsproducing the hormone.b. As the bladder fills with urine, pressure sensors send messagesto the brain with increasing frequency, signaling that the bladdermust be emptied. The more the bladder fills, the more messagesare sent.c. When you drink an excess of water, specialized cells in yourbrain, as well as stretch receptors in your heart, detect theincrease in blood volume. Both signals are transmitted to thekidneys, which increase the production of urine.
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