1. Skeletal System and Functions

What does the skeletal system include?

Bones, joints (articulations), supporting tissues (tendons, ligaments)

Name the six functions of the skeletal system.

Protection, mineral storage, blood cell formation, fat storage, movement, support

How does the skeleton provide protection?

Hard bone forms a strong shell around organs

What minerals do bones store, and why does that matter?

Calcium, phosphorus, magnesium – for electrolyte and acid–base balance

Which skeletal tissue is responsible for blood cell formation?

Red bone marrow

Which skeletal tissue handles fat storage, and what exactly does it store?

Yellow bone marrow – adipocytes storing triglycerides

How do bones help produce movement?

Muscles pull on bones at attachment sites, moving joints

What is the support function of the skeleton?

Supports body weight and gives it a framework

Which skeletal function is at work in each case?

(a) Your ribs surround your lungs.

(b) Your biceps pulls on a forearm bone.

(c) New blood cells are being made inside a bone.

(a) Protection

(b) Movement

(c) Blood cell formation

Which skeletal function is at work in each case?

(a) Bone holds calcium the blood may need later.

(b) Adipocytes in a bone hold triglycerides.

(c) Your leg bones hold up your body weight.

(a) Mineral storage

(b) Fat storage

(c) Support