Skeletal System

The functions are the skeletal system are

• To support the body, protect the organs, store calcium, and produce blood cells

• to regulate the composition of body fluids by removing metabolic wastes and retain the balance of water, salt, and other nutrients

• to regulate and maintain bodily functions by producing hormones and releasing them into the blood stream

• to enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream

Where is new blood cells created?

• In the scapula

• In bone marrow, located inside the bone

• In the patella

• In bone marrow, located inside the muscle tissue

How many bones are in the adult human body?

• 260

• 280

• 208

• 206

Identify the skeletal bone in the picture highlighted red that is the upper arm or forelimb, forming joints at the shoulder and the elbow

• ribs

• phalanges

• patella

• humerus

Identify the skeletal bone in the picture highlighted in red

• sternum

• ribs

• femur

• vertebrae

Identify the skeletal bone in the picture highlighted in green; cartilage surrounds this bone to act as a shock absorber

• femur

• mandible

• humerus

• patella

This is present at the end of a bone and acts as a cushion.

• cartilage

• tendon

• ligament

• bone marrow

Babies have more bones than adults.

• True

• False

Which set of bones is in your back and holds up your body?

• skull

• spine

• joint

• arm

Describe some of the natural protection your body has to prevent bone damage.

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