Unit 4: The Skeletal, Muscular & Integumentary System

Question 1

Includes the skull, vertebral column, and rib cage

Answer 1

Axial skeleton

Question 2

Includes the arms and legs, pelvis, and shoulder area

Answer 2

Appendicular skeleton

Question 3

The passageways in which nerves and blood vessels run through compact bone

Answer 3

Haversian canals

Question 4

Consists primarily of cells that store fat

Answer 4

Yellow bone marrow

Question 5

Contains the stem cells that produce most types of blood cells

Answer 5

Red bone marrow

Question 6

Secrete minerals deposits that replace the cartilage in developing bones

Answer 6

Osteoblasts

Question 7

Cells that break down bone minerals

Answer 7

Osteoclasts

Question 8

Contain connective tissues that hold bones together

Answer 8

Ligaments

Question 9

Hold bones together in a joint

Answer 9

Joints

Question 10

Skeletal muscles are filled with these tightly packed filament bundles

Answer 10

Myofibril

Question 11

Where motor neurons and skeletal muscle cells meet

Answer 11

Neuromuscular junction

Question 12

Join skeletal muscles to bones

Answer 12

Tendons

Question 13

A tough, fibrous protein found in the skin

Answer 13

Keratin

Question 14

The protein responsible for skin pigment; made in melanocytes

Answer 14

Melanin

Question 15

Produce sebum in the skin

Answer 15

Sebaceous glands

Question 16

Hair is produced by cells at the base of these structures

Answer 16

Hair follicles

Question 17

List the three types of muscular tissue

Answer 17

Skeletal muscle, smooth muscle, and cardiac muscle

Question 18

Where in the body could you find the three types of muscular tissue?

Answer 18

Skeletal muscle: Bone.

Smooth muscle: Liver, pancreas, and intestine.

Cardiac muscle: Heart.

Question 19

Describe the five major functions of the integumentary system

Answer 19

1. Protection.
2. Temperature regulation.
3. Excretion.
4. Metabolism.
5. Perception.