Homeostasis

What is an example of a positive feedback mechanism?

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Tags

NGSS.HS-LS1-3

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 
• receptor and effector
• static and dynamic
• minor and major

Tags

NGSS.HS-LS1-3

Rapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop.

• Positive Feedback Response
• Negative Feedback Loop 

Tags

NGSS.HS-LS1-3

If the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up.

• Positive Feedback Response
• Negative Feedback Loop 

Tags

NGSS.HS-LS1-3

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
• is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation

Tags

NGSS.HS-LS1-3

Which system sends electrical messages that helps control the body's responses to internal and external changes?

• nervous
• endocrine
• reproductive
• integumentary

These two body systems regulate feedback mechanisms.

• Skeletal & Muscular
• Skeletal & Endocrine
• Muscular & Nervous
• Endocrine & Nervous

Tags

NGSS.HS-LS1-3

These detect changes in the environment

• Control Center

• Sensors

• Communication System

• Target

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS3-2

A change inside of the organism caused by the initiation event is the ...

• response

• effector

• control center

• stimulus

Tags

NGSS.MS-LS1-8

Which part of the feedback loop is a body part that makes a change to bring the system back to homeostasis?

• Effector

• control center

• response

• receptor