Skeletal System & Circulatory System

SKELETAL SYSTEM

There are ____ bones in the skeletal system.

• 300

• 115

• 206

SKELETAL SYSTEM

The skeletal system ____ internal organs.

• makes

• protects

• grows

SKELETAL SYSTEM

The ___ is the largest bond in the human body.

• femur

• funny bone

• skull

SKELETAL SYSTEM

The ___ encloses and protects the lungs and heart.

• skull

• phalanges

• rib cage

SKELETAL SYSTEM

Which of the following is NOT produced by bone marrow?

• red blood cells

• white blood cells

• nitrogen

• platelets

SKELETAL SYSTEM - True or False

The skeletal system gives our bodies structure.

• True

• False

SKELETAL SYSTEM

An infant is born with ___ bones. Their smaller bones will combine and form bigger bones.

• 400

• 280

• 300

SKELETAL SYSTEM

The smallest bone (the stirrup) in our body can be found in our ___.

• leg

• ear

• nose

SKELETAL SYSTEM

The only long bone in the body that lies horizontally is called the ___. There are 2 of them and they are also called the shoulder bones.

• clavicle

• sternum

• humerus

SKELETAL SYSTEM

Vertebrates are built of ___ small bones. This whole structure is know as the spine.

• 33

• 13

• 25