Feed Back Loops and Body Systems

organ of the endocrine system that secretes hormones.

• heart
• gland
• brain
• skin

Humans have ___ for body temperature, blood glucose concentrations, electrolyte concentrations, pH levels, tendon tension and variables.

• positive feedback mechanisms
• set points
• a wide internal range
• no regulation

 What is the main job of the digestive system? 

• break down foods into nutrients that can be used by the body
• take in oxygen and exhale waste like carbon dioxide
• pump blood throughout the body
• makes the body hungry

The "effect" of a given stimulus is the...

• response
• stimulus
• cause
• result

A feedback loop best fits which characteristic of life?

• Cells

• Organization

• Homeostasis

• Adaptation

A ________________ feedback loop makes a system more stable.

• Positive

• Neutral

• Negative

• Circular

A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level

• hormones

• homeostasis

• disease

Detects change and sends a message to the control center

• receptor

• control center

• effector

• regulation

 What is the main function of the respiratory system?

• take in oxygen and exhale waste like carbon dioxide
• move nutrients throughout the body
• take in carbon dioxide and exhale oxygen

Which body system controls the body to maintain homeostasis?

• excretory

• nervous

• circulatory

• skeletal