Question 1

Positive feedback moves a controlled variable even further away from a steady state.

Accepted Answer

Positive feedback amplifies and reinforces the changes in the controlled variable, causing it to move further away from a steady state.

Question 2

Complete each of the following statments.
A(n) ____________________ is a collection of organs that perform related functions and interact to accomplish a common activity that is essential for survival of the whole body.

Accepted Answer

The answer of Complete each of the following statments.
A(n) ____________________...

Question 3

Complete each of the following statments.
The smallest unit capable of carrying out the processes associated with life is the ____________________.

Accepted Answer

The answer of Complete each of the following statments.
The smallest...

Question 4

Complete each of the following statments.
____________________ glands secrete through ducts, whereas ____________________ glands secrete directly into the blood.

Accepted Answer

The answer of Complete each of the following statments.
____________________ glands...

Question 5

A single pluripotent cell without dividing can differentiate into more than one kind of mature body cell.

Accepted Answer

The answer of A single pluripotent cell without dividing can...

Question 6

Exocrine glands are the only structures in the body capable of secretion.

Accepted Answer

This statement is false. Many structures in the body have the ability to secrete substances, including endocrine glands, kidneys, salivary glands, and mucous membranes, among others.

Question 7

Complete each of the following statments.
____________________ cells are specialized to send electrical signals.

Accepted Answer

The answer of Complete each of the following statments.
____________________ cells...

Question 8

The plasma surrounds and bathes all of the body's cells.

Accepted Answer

The answer of The plasma surrounds and bathes all of...

Question 9

The endocrine system relies on the circulatory system for the transport of hormones.

Accepted Answer

Hormones are secreted by endocrine glands and transported through the bloodstream to their target organs or tissues. Therefore, the endocrine system relies on the circulatory system to transport hormones throughout the body.

Question 10

The integumentary system contains specialized organs called sweat glands, which are important in regulating body temperature.

Accepted Answer

Sweat glands play a crucial role in regulating body temperature by producing sweat, which cools the body through evaporation.

Question 11

Most homeostatic mechanisms operate on the principle of positive feedback.

Accepted Answer

Most homeostatic mechanisms operate on the principle of negative feedback, where a change in a physiological variable triggers a response designed to counteract that change and bring the variable back to its set point. Positive feedback mechanisms, on the other hand, amplify the initial change rather than counteract it, leading to a larger and larger response until it reaches completion. Positive feedback is rare in homeostasis because it tends to be unstable and can lead to potentially dangerous outcomes.

Question 12

Complete each of the following statments.
____________________ muscle tissue composes the heart.

Accepted Answer

The answer of Complete each of the following statments.
____________________ muscle...

Question 13

Complete each of the following statments.
____________________ are composed of two or more types of primary tissue organized to perform a particular function or functions.

Accepted Answer

The answer of Complete each of the following statments.
____________________ are...

Question 14

With positive feedback, a control system's input and output continue to enhance each other.

Accepted Answer

This is correct. In positive feedback, any change in the output of the system is amplified and fed back to the input, which in turn causes further changes in the output, resulting in a "loop" of amplification. This can lead to instability and oscillation in the system.

Question 15

Complete each of the following statments.
The internal environment consists of the ____________________, which is made up of ____________________; the fluid portion of the blood; and ____________________, which surrounds and bathes all cells.

Accepted Answer

The answer of Complete each of the following statments.
The internal...

Question 16

Feedforward mechanisms bring about a response in reaction to a change in a regulated variable.

Accepted Answer

The answer of Feedforward mechanisms bring about a response in...

Question 17

The concentration of salt in the extracellular fluid influences how water enters and leaves cells.

Accepted Answer

The concentration of salt in the extracellular fluid creates an osmotic gradient that determines the direction of water movement across the cell membrane. If the extracellular fluid has a higher salt concentration, water will flow out of the cell to balance the gradient. If the extracellular fluid has a lower salt concentration, water will flow into the cell. This process is important in maintaining proper cell hydration and overall fluid balance in the body.

Question 18

One organ can belong to more than one body system.

Accepted Answer

For example, the liver belongs to both the digestive system and the circulatory system. It plays a role in detoxifying substances from the digestive system and also helps in the production and regulation of blood components in the circulatory system.

Question 19

Secretion in response to appropriate stimulation refers to the release of specific products that have, in large part, been synthesized by the cell.

Accepted Answer

Secretion is the release of specific products that have been synthesized by the cell in response to appropriate stimulation.

Question 20

Negative feedback operates to maintain a controlled factor in a relatively steady state.

Accepted Answer

Negative feedback is a mechanism that creates a response that is opposite in direction to a change in a controlled factor, thus keeping that factor within a narrow range of values or in a steady state.

Quiz 1: Introduction to Physiology and Homeostasis

Positive feedback moves a controlled variable even further away from a steady state.

Complete each of the following statments. A(n) ____________________ is a collection of organs that perform related functions and interact to accomplish a common activity that is essential for survival of the whole body.

Complete each of the following statments. The smallest unit capable of carrying out the processes associated with life is the ____________________.

Complete each of the following statments. glands secrete through ducts, whereas glands secrete directly into the blood.

A single pluripotent cell without dividing can differentiate into more than one kind of mature body cell.

Exocrine glands are the only structures in the body capable of secretion.

Complete each of the following statments. ____________________ cells are specialized to send electrical signals.

The plasma surrounds and bathes all of the body's cells.

The endocrine system relies on the circulatory system for the transport of hormones.

The integumentary system contains specialized organs called sweat glands, which are important in regulating body temperature.

Most homeostatic mechanisms operate on the principle of positive feedback.

Complete each of the following statments. ____________________ muscle tissue composes the heart.

Complete each of the following statments. ____________________ are composed of two or more types of primary tissue organized to perform a particular function or functions.

With positive feedback, a control system's input and output continue to enhance each other.

Complete each of the following statments. The internal environment consists of the , which is made up of ; the fluid portion of the blood; and , which surrounds and bathes all cells.

Feedforward mechanisms bring about a response in reaction to a change in a regulated variable.

The concentration of salt in the extracellular fluid influences how water enters and leaves cells.

One organ can belong to more than one body system.

Secretion in response to appropriate stimulation refers to the release of specific products that have, in large part, been synthesized by the cell.

Negative feedback operates to maintain a controlled factor in a relatively steady state.

Quiz 1: Introduction to Physiology and Homeostasis

Positive feedback moves a controlled variable even further away from a steady state.

Complete each of the following statments. A(n) ____________________ is a collection of organs that perform related functions and interact to accomplish a common activity that is essential for survival of the whole body.

Complete each of the following statments. The smallest unit capable of carrying out the processes associated with life is the ____________________.

Complete each of the following statments. ____________________ glands secrete through ducts, whereas ____________________ glands secrete directly into the blood.

A single pluripotent cell without dividing can differentiate into more than one kind of mature body cell.

Exocrine glands are the only structures in the body capable of secretion.

Complete each of the following statments. ____________________ cells are specialized to send electrical signals.

The plasma surrounds and bathes all of the body's cells.

The endocrine system relies on the circulatory system for the transport of hormones.

The integumentary system contains specialized organs called sweat glands, which are important in regulating body temperature.

Most homeostatic mechanisms operate on the principle of positive feedback.

Complete each of the following statments. ____________________ muscle tissue composes the heart.

Complete each of the following statments. ____________________ are composed of two or more types of primary tissue organized to perform a particular function or functions.

With positive feedback, a control system's input and output continue to enhance each other.

Complete each of the following statments. The internal environment consists of the ____________________, which is made up of ____________________; the fluid portion of the blood; and ____________________, which surrounds and bathes all cells.

Feedforward mechanisms bring about a response in reaction to a change in a regulated variable.

The concentration of salt in the extracellular fluid influences how water enters and leaves cells.

One organ can belong to more than one body system.

Secretion in response to appropriate stimulation refers to the release of specific products that have, in large part, been synthesized by the cell.

Negative feedback operates to maintain a controlled factor in a relatively steady state.

Complete each of the following statments. glands secrete through ducts, whereas glands secrete directly into the blood.

Complete each of the following statments. The internal environment consists of the , which is made up of ; the fluid portion of the blood; and , which surrounds and bathes all cells.