Unit 1.3 Homeostasis
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It is the core or the heart of physiology. It refers to the internal state which means balance.

Homeostasis

A state in which the internal environment of the body are mainly under control of two systems, the ________ and _______.

Nervous system and endocrine system

It detects changes from the balanced state and sends messages in the form of ___________ to organs to counteract the change.

Electrical signals or nerve impulses

It detects changes from the balanced state and sends messages in the form of electrical signals or nerve impulses to organs to counteract the change.

<p>Nervous system</p> Signup and view all the answers

It detects changes from the ________ and sends messages in the form of electrical signals or nerve impulses to organs to counteract the change.

<p>Balanced state</p> Signup and view all the answers

It detects changes from the balanced state and _______ in the form of electrical signals or nerve impulses to organs to counteract the change.

<p>Send messages</p> Signup and view all the answers

It detects changes from the balanced state and sends messages in the form of electrical signals or nerve impulses to organs to _______ the change.

<p>Counteract</p> Signup and view all the answers

It corrects changes by secreting molecules called Hormones into the blood; hormones affect specific body cells to restore homeostasis.

<p>Endocrine system</p> Signup and view all the answers

It corrects changes by secreting molecules called ______ into the blood; This affect specific body cells to restore homeostasis.

<p>Hormones</p> Signup and view all the answers

It ________ by secreting molecules called Hormones into the blood; hormones affect specific body cells to restore homeostasis.

<p>Corrects changes</p> Signup and view all the answers

It corrects changes by secreting molecules called Hormones into the _____; hormones affect specific body cells to restore homeostasis.

<p>Blood</p> Signup and view all the answers

It corrects changes by secreting molecules called Hormones into the blood; hormones affect specific ____ to restore homeostasis.

<p>Body cells</p> Signup and view all the answers

It corrects changes by secreting molecules called Hormones into the blood; hormones affect specific body cells to ________

<p>Restore homeostasis</p> Signup and view all the answers

It is a cycle of events in which a controlled condition in the body (e.g. body temperature and blood pressure) is continually monitored, evaluated, changed, re-monitored, re-evaluated and so on.

<p>Feedback Mechanism</p> Signup and view all the answers

Feedback mechanism is a _______ in which a controlled condition in the body (e.g. body temperature and blood pressure) is continually monitored, evaluated, changed, re-monitored, re-evaluated and so on.

<p>Cycle of events</p> Signup and view all the answers

Feedback mechanism is a cycle of events in which a _______in the body (e.g. body temperature and blood pressure) is continually monitored, evaluated, changed, re-monitored, re-evaluated and so on.

<p>Controlled condition</p> Signup and view all the answers

Feedback mechanism is a cycle of events in which a controlled condition in the body (e.g. body temperature and blood pressure) is continually ______, _____, ______, ________, _______and so on.

<p>Monitored, evaluated, changed, re-monitored, re-evaluated</p> Signup and view all the answers

What are the basic component of a feedback mechanism?

<p>Receptor, control center, effector</p> Signup and view all the answers

It is a body structure that monitors a change in a controlled condition; this change stimulus.

<p>Receptor</p> Signup and view all the answers

It is the processing center

<p>Control center</p> Signup and view all the answers

It evaluates the input it received from the receptors and generates output commands to appropriate organs when they are needed.

<p>Control center</p> Signup and view all the answers

Receptor sends information called ____ to the control center

<p>Input</p> Signup and view all the answers

It is the body structure that receives output from the control center and produces a response that changes the controlled situation.

<p>Effector</p> Signup and view all the answers

It is the body structure that ______ from the control center and ________ that changes the controlled situation.

<p>Receives output and produces a response</p> Signup and view all the answers

It refers to any organ of the body that can act as a receptor

<p>Effector</p> Signup and view all the answers

Receptor is the structure that _______ in a controlled condition; this change stimulus.

<p>Monitors a change</p> Signup and view all the answers

What are the two types of feedback mechanism?

<p>Negative feedback mechanism and positive feedback mechanism</p> Signup and view all the answers

It refers reverses of change in a controlled condition bringing it back to normal.

<p>Negative feedback mechanism</p> Signup and view all the answers

Negative feedback mechanism refers to the ______of change in a controlled condition bringing it back to normal.

<p>Reverses</p> Signup and view all the answers

Negative feedback mechanism refers reverses of change in a _______ bringing it back to normal.

<p>Controlled condition</p> Signup and view all the answers

Negative feedback mechanism refers reverses of change in a controlled condition bringing it back to ______.

<p>Normal</p> Signup and view all the answers

Example for this type of feedback mechanism are body temperature and blood pressure.

<p>Negative feedback mechanism</p> Signup and view all the answers

It refers to strengthening a controlled condition.

<p>Positive feedback mechanism</p> Signup and view all the answers

Positive feedback mechanism ________ a controlled condition

<p>Strengthens</p> Signup and view all the answers

Examples of this feedback mechanism are childbirth and blood cutting.

<p>Positive feedback mechanism</p> Signup and view all the answers

It increases blood flow and decrease blood pressure

<p>Dilate</p> Signup and view all the answers

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