Year 9 Science homeostasis

Name the levels of organization in the human body in order from smallest to largest:

• Tissue, organ, organ system
  
• Organ system, tissue, organs, cells
  
• Cells, tissue, organs, organ system
  
• Cells , organs, tissue, organ system

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment

• is the maintenance of a relatively stable external environment

What describes a lack of water in the blood?

• Dehydration
• Rehydration
• Hydration
• Concentrated

With low oxygen levels, your breathing rate will increase. When your oxygen levels rise, what is the appropriate response?

• stop breathing

• increase heart rate

• keep breathing rate high

• return breathing rate to baseline

What does "homeo" mean?

• same

• different

• equal

• frozen

What does "stasis" mean?

• different

• warped

• a state of equilibrium

• same

How does your body maintain homeostasis when it's cold out?

• You sweat

• You shiver

• Your skin gets goose bumps

• Both shivering and getting goose bumps

How does your body maintain homeostasis when it's hot out?

• You shiver

• You sweat

• You cry

• You breathe

Diagram shows two students doing exercise. What happens to their body temperature after exercise?

• Increase

• Decrease

• Remains the same

• Continues to increases

The picture below is an example of _________________.

• osmosis

• isotonic

• diffusion

• active transport