1. McAleer

2. Epidermis - outermost layer of skin. Dermis - deeper functional layer of skin. Keratin - Strong flexible protein in skin, hair & nails. Melanin - pigment that gives skin its color and shields skin from ultraviolet rays. (sunlight) Collagen - flexible protein fibers that make the skin elastic. Which gender has stronger collagen and why?

3. What causes acne ? Over active Sebaceous Glands. Pores of skin become clogged with oil. Hormones make sebaceous glands produce more oil which clog the skin. Sebaceous Glands - glands in the skin that add oil to the skin and hair shaft. Treatments for acne 1. Acutane (internal) 2. Retin “A” (external). 3. Antibiotics 4. Over the counter preparations such as Proactive, Clearasil, Neutrogena, & etc... 5. Skin Doctor -Dermatologist

4. Ways to be protected from the Sun : Sunscreen Protective clothing : ex. Hat, sunglasses Limit exposure in the sun ABCD’s of Melanoma A = Asymmetry (halves don’t match) B = Border Irregularity (edges) C = Color (Black, bluish tint) D = Check for moles that are wider across than a pea

5. Cartilage - strong flexible material in ears, nose, and joints and make up most of a babies skeleton. Ossification - cartilage turning to bone. This happens to babies as they grow they are then able to walk ( close to age one ) Ligaments - connects bones to each other at movable joints. Tendons - bands of fiber which connect muscle to bone.

6. Brittle bone disease Happens mostly to woman as they get older Best way to prevent is to get a healthy diet with CALCIUM and exercise. Eat a Healthy diet containing calcium Eating disorders such as Anorexia and Bulimia contribute to Osteoporosis.

7. 3 types of muscles, what & where - 1.Skeletal (bicep) all muscles that attach to the skeleton 2. Smooth (veins and eyelids) 3. Cardiac (heart)

8. Artificial Testosterone Side Effects - Cancer, Heart Disease, Roid Rage, Insomnia, & Testicular Atrophy. Girls become more masculine (facial hair, acne) Hypertrophy - when muscles enlarge Atrophy - when muscles shrink

9. Nerves - bundles of tissue that carry signals from one place to another. CNS (Central Nervous System) - made up of the Brain and Spinal Cord. Neurons - nerve cells made up of a cell body, dendrites which receive signals and axons which carry signals to the next cell. Neurotransmitters - chemicals released at the end of axons and move across the synaptic cleft and bind to receptors of the next cell. (pg. 517)

10. Quadriplegic - paralyzed from the neck down Paraplegic - paralyzed from the waist down Both result from spinal cord injuries and happen mostly to younger men. Why do you think it happens mostly to younger men?