Homeostasis

The levels of organization include 

• • Cells- Organs- Organ systems- Tissues

• • Cells- Tissues- Organs- Organ Systems

• • Tissues- Cells- Organs- Organ Systems

• • Organ Systems- Organs- Cells- Tissues

What is homeostasis in a biological context?

• A state of constant change within the body.

• The process of maintaining a stable internal environment.

• The body's ability to adapt to external changes without internal adjustments.

• A condition where the body's systems are completely shut down.

What are some examples that require balance or need to reach homeostasis?    (Choose 3)

• the color of your hair

• the pH in your blood

• internal body temperature

• the glucose in your blood

• the hours of sleep you get throughout the day

What is a key characteristic of an endotherm?

• Their internal body temperature fluctuates with the environment.

• They rely solely on external heat sources to regulate body temperature.

• They actively work to maintain a stable internal body temperature.

• They are commonly referred to as "cold-blooded" animals.

What body part recognizes that you're hot?

• brain

• muscles

The brain sends out signals to the body to counteract the heat.  Check off the signals below. (Check 3)

• • Sweat cools you off when it evaporates from your skin

• you get hungry

• you begin to sweat

• blood vessels dilate and get wider

How does your body generate heat?

• shivering

• sweating

What is the primary purpose of a negative feedback loop in the human body?

• To amplify a change in a variable.

• To counteract a change and return to a set point.

• To completely stop all bodily functions.

• To initiate a rapid, uncontrolled response.

Insulin's job is to make cells take in glucose.  As a result, the amount of sugar in the blood

• increases

• decreases

• remains the same

When blood glucose levels are too high, which hormone is typically released to help lower them?

• Glucagon

• Insulin

• Adrenaline

• Thyroxine