3.2 Structure Determines Function

Match the blood part to their function.

• Carry oxygen

• Platelets

• Clot Blood

• White Blood Cells

• Carry dissolved nutrients

• Plasma

• Fight infection and bacteria

• Red Blood Cells

Match the blood part to their structure.

• flexible, red discs

• Red Blood Cells

• larger, white, flexible discs

• Platelets

• spiky discs

• Plasma

• yellowish liquid

• White Blood Cells

Tags

NGSS.MS-LS1-3

Which blood cell is dyed purple and why?

• Red blood cells, because the purple dye helps them carry oxygen

• White blood cells, because they lack color and are hard to see without staining.

• Only sick blood cells, because the dye indicates disease

• All blood cells, so scientists can tell them apart easily.

Since white blood cells fight off bacteria and infection what would it mean if they had an increased amount of white blood cells in their system?

• It indicates a decrease in red blood cells.

• It suggests the body is in a state of relaxation.
• It means the body is likely sick or healing in injury.

• It means the immune system is completely inactive.

Organize the synonyms.

Groups:

(a) Structure

,

(b) Function

• form

• shape

• what is can do

• job

• the ability to do something

• the way something looks

Match the part/system with its function.

• Gives your body structure

• Muscles

• Helps move your body parts

• Skeletal

• Protects your insides

• Integumentary (skin)

How do your bones and your muscles work together?

• Bones and muscles work together by muscles engage/contract to pull on bones, creating movement.

• Bones are only for support and do not interact with muscles.
• Bones and muscles work independently without any interaction.
• Muscles push against bones to create movement without pulling.

How do your bones and your skin work together?

• Skin provides nutrients to the bones.
• Bones and skin are completely independent systems.
• Bones are responsible for producing sweat.
• Bones and skin work together to provide structure, protection, and temperature regulation.

How do your muscles and your skin work together?

• Muscles and skin do not interact at all.
• Skin provides nutrients to the muscles directly.
• Muscles only function independently of the skin.
• Muscles and skin work together by allowing movement and providing sensory feedback.

How do your bones, muscles, and skin work together?

• Bones, muscles, and skin work together to support movement and protect the body.
• Skin is responsible for bone growth.
• Muscles act as a barrier against external threats.
• Bones provide energy for muscle contraction.