Feedback Loops and Homeostasis

What is the point of a feedback loop?

• To provide the body with more energy

• To provide the body with more food

• To make sure the conditions in the body are always changing

• To make sure the conditions in the body remain stable

Tags

NGSS.HS-LS1-3

A feedback loop best fits which characteristic of life?

• Cells

• Organization

• Homeostasis

• Adaptation

Tags

NGSS.HS-LS1-3

According to the feedback loop, what does high blood sugar promote?

• Insulin Release

• Glucagon Release

• Insulin Uptake

• Glycogen Uptake

Tags

NGSS.HS-LS1-3

What happens if stretch receptors are activated in the uterus?

• Oxytocin will cause uterine muscles to relax

• Contractions will get weaker

• The baby will be born later than normal

• The brain will signal for the release of oxytocin

If the anterior pituitary does not release TSH, what will happen?

• Thyroid follicles will not release T3 and T4

• The hypothalamus will release TRH

Tags

NGSS.HS-LS1-3

Failure to maintain homeostasis could result in:

• lack of internal balance
• eventual death
• difficulty carrying on metabolism 
• all three

Tags

NGSS.HS-LS1-3

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

Tags

NGSS.HS-LS1-3

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

Tags

NGSS.HS-LS1-3

The "cause" for something to happen is the

• response
• effect
• stimulus
• homeostasis

Tags

NGSS.HS-LS4-4

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

• response
• stimulus
• cause
• result