Homeostasis

Which two systems work together to maintain homeostasis while transporting oxygen throughout the body and removing carbon dioxide?

• circulatory and respiratory

• respiratory and excretory

• circulatory and digestive

• respiratory and digestive

Which of the following is not regulated by homeostasis?

• body temperature

• blood sugar

• blood pH

• body movements

Tags

NGSS.HS-LS1-3

____________________ helps warm the human body when we are cold.

• sweating

• shivering

• inhaling oxygen

• exhaling carbon dioxide

Tags

NGSS.HS-LS1-3

What is an example of a positive feedback mechanism?

• 
• 

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

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

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

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 

• 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