Unit 1 - Lesson 2

Question 1

Skeletal System

Answer 1

The organ system that supports and protects the body and allows it to move
It also stores minerals and produces red blood cells

A. Protection
B. Storage
C. Blood cell production
D. Movement

Question 2

Ligament

Answer 2

Tough, flexible strands of connective tissue that holds bones together

Found at the ends of bones

Question 3

Cartilage

Answer 3

A strong, flexible and smooth connective tissue found at the end of bones

It allows bones to move smoothly across each other

Question 4

What are bones made of?

Answer 4

Minerals - calcium
Connective tissue - made of a protein called collagen
Marrow - a soft tissue found in the center of bones

Question 5

What are the 2 types of bone tissue?

Answer 5

Compact bone - dense and makes bone rigid and hard

Spongy bone - has many open spaces and provides most of the strength and support for a bone

Question 6

Joint

Answer 6

The place where 2 or more bones connect

Can be fixed or movable

Question 7

Types of movable joints

Answer 7

Ball and socket joint
Gliding joint
Hinge joint

Question 8

Muscular system

Answer 8

Made of the muscles that allow your body to move and be flexible

3 types of muscle:
Smooth muscle - found in internal organs and blood vessels
Cardiac muscle - found in the heart
Skeletal muscle - attached to bones

Question 9

Tendon

Answer 9

The tough strand of tissue that connects a muscle to a bone

Question 10

How does skeletal muscle work?

Answer 10

In pairs:
Flexor - bends a joint
Extensor - straightens a joint