Functions
What organ system supports and protects the body?
Skeletal system – supports & protects
What are the two layers of skin?
Epidermis & dermis
What is the place where two bones meet called?
Joint
What happens when a bone breaks?
Fracture
Which type of exercise strengthens heart muscles?
Aerobic Exercises
Which type of muscle pumps blood through involuntary muscle action?
Cardiac muscles
Which muscle type is voluntary?
Skeletal muscle
Which type of joint is found in the wrist? Define it.
Gliding joint. A gliding joint is one in which thw bones glide past each other.
What condition makes joints stiff and painful?
Arthritis
Which organ is the largest in the body?
Skin
What does red marrow produce?
Red and white blood cells
What are the two kinds of bone tissue?
Spongy bone & compact bone
Which joint allows movement in all directions?
Ball-and-socket joint
Which disease makes bones brittle and easy to break?
Osteoporosis
Spell the chemical that gives skin its color?
Melanin
Name two ways skin helps maintain homeostasis.
Cooling by sweat & removing wastes
What protein makes the epidermis tough?
Keratin
What is the difference between a flexor and an extensor?
Flexor bends a body part; extensor straightens it
Explain a Strain.
A strain is a type of muscle injury that happens when we overdo any exercise, resulting in overstretched and torn muscles.
What temporary covering forms over a cut to stop bleeding?
Blood clot (later forms a scab)
Which connective tissue connects muscles to bones?
Tendons
What protein in the dermis gives skin strength and flexibility?
Collagen
What are the connective tissues that hold joints together?
Ligaments
How does acne form on your skin?
Hormones can cause your skin to make too much oil. The oil can combine with bacteria and dead skin cells to form acne.
Why do hairs stand up when you’re cold?
To trap warm air & keep body warm