Physiology Mechanisms

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Questions and Answers

What do physiologists aim to explain?

The What question

The Where question

The How question (correct)

The Why question

How do physiologists view the human body?

As a collection of unrelated organs

As a mysterious entity that cannot be fully understood

As a complex system of abstract concepts

As a machine whose mechanism of action is explained by physical and chemical processes (correct)

What type of sequences do physiologists explain in the body?

Emotional and psychological sequences

Causal and temporal sequences

Cause and effect sequences of physical and chemical processes (correct)

Spatial and structural sequences

What do physiologists use to explain the body's mechanisms?

Physical and chemical processes Signup and view all the answers

What approach do physiologists take to understand the body?

Mechanical and scientific Signup and view all the answers

What is homeostasis?

Maintenance of a relatively stable internal environment Signup and view all the answers

Why is homeostasis essential?

For the survival of each cell Signup and view all the answers

What do cells contribute to through their specialized activities?

The maintenance of the internal environment Signup and view all the answers

What is the result of each cell's specialized activities?

Maintenance of the internal environment Signup and view all the answers

What is the endocrine system responsible for?

Higher functions Signup and view all the answers

What do all cells share?

An internal environment Signup and view all the answers

What type of activities does the endocrine system regulate?

Activities that require duration Signup and view all the answers

What is the primary characteristic of the activities regulated by the endocrine system?

Duration Signup and view all the answers

What can be said about the endocrine system's regulatory functions?

They are long-term Signup and view all the answers

What type of functions are regulated by the endocrine system?

Higher functions Signup and view all the answers

What is the relationship between the whole body and its separate systems?

The whole body is greater than the sum of its separate parts. Signup and view all the answers

What is a key aspect of the body's organization?

The body is a coordinated whole. Signup and view all the answers

What is true about the body's systems?

Each system provides its own special contributions. Signup and view all the answers

What can be said about the body's organization?

It is a carefully organized whole. Signup and view all the answers

What is a characteristic of the body's functioning?

It is greater than the sum of its separate parts. Signup and view all the answers

What is an important characteristic of living cells?

Being sensitive and responsive to changes in the surrounding environment Signup and view all the answers

Which type of cells are unable to reproduce?

Nerve cells and muscle cells Signup and view all the answers

What is a unique characteristic of nerve cells?

Inability to reproduce Signup and view all the answers

What is a common characteristic of muscle cells and nerve cells?

Inability to reproduce Signup and view all the answers

Which of the following is a characteristic of most cells?

Ability to reproduce except for nerve cells and muscle cells Signup and view all the answers

Study Notes

Physiologists' Approach

Physiologists explain how the body works.
They view the body as a machine whose mechanisms of action are explained in terms of cause-and-effect sequences of physical and chemical processes.

Cellular Functions

Most cells can reproduce, except for nerve cells and muscle cells.
Homeostasis is the maintenance of a relatively stable internal environment, which is essential for the survival of each cell.

Contributions to Homeostasis

Each cell, through its specialized activities, contributes to the maintenance of the internal environment shared by all cells as part of a body system.

Endocrine System Function

The endocrine system regulates activities that require duration rather than speed.

Integrated Body Function

The body is a coordinated whole, with each system providing its own special contributions.
The functioning whole is greater than the sum of its separate parts.

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Description

Understand the physiological mechanisms of the human body, explained in terms of physical and chemical processes, and how physiologists approach the 'how' question.