PHST-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

The term for maintaining internal temperature is: 

• Thermoregulation
• Thermometer
• Homeothermal
• Homeostasis

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

What hormone is produced in the pancreas that lowers blood sugar?

• Insulin

• Glucagon

• Ketones

• Glucose

Endothermic creatures maintain fairly consistent body temperatures. Ectothermic creatures do not. What are the best synonyms for "endothermic" and "ectothermic?"

• warm-blooded and cold-blooded

• land-dwelling and water-dwelling

• vertebrate and invertebrate

If a person's blood cells shrivel (shrink) their blood is likely

• isotonic

• hypotonic

• hypertonic

Tags

NGSS.HS-LS1-3

Which hormone is responsible for increasing blood circulation, breathing and metabolic rates and is sometimes called adrenaline?

• Insulin

• Glycogen

• Epinephrine

• Norepinephrine

When a blood vessel increases in size it is?

• Vasodilation

• Isotonic

• Vasoconstriction

• Hypotonic