Skin
Which skin layer contains blood vessels?
dermis
Which hormone primarily triggers acne during puberty?
testosterone
diaphysis/shaft/middle
What kind of tissue are muscles?
muscular tissue! duh!
What percentage of your brain is made up of fat?
60%
How does the skin maintain moisture?
sebaceous glands (oil glands)
What chronic skin condition is marked by itchy, inflamed, and scaly skin?
eczema
Give an example of a sesamoid bone.
kneecap, the flexor bones of the middle feet, pisiform (wrist)
How do muscles attach to bones?
tendons
Why is a polar bear's skin black?
helps them absorb sunlight
What two compounds make up sweat?
dihydrogen monoxide and salt
If someone has vitiligo, then what in their epidermis layer is not working?
melanocytes (melanin is not being produced)
What is the primary function of flat bones?
protect vital organs and structures
Describe the characteristics of smooth muscle tissue.
non-striated, involuntary, used for digestion of food and absorption of nutrients
What is penicillin?
an antibiotic grown from mold used to treat bacterial infections like strep throat, pneumonia, ear infections, and skin infections
True or false: most of the hypodermis is made of adipose tissue.
true!
What is the name of the skin cancer that is most likely to be malignant?
melanoma
What are chondrocytes? What do they do?
cartilage cells responsible for endochondral ossification (the process of bone growth via a cartilage model)
What is myoglobin? Which type of muscle has less of it?
protein found in muscles that stores oxygen; fast twitch
What is the rarest type of organ cancer?
thymic carcinoma (thymus gland)
Why is the top layer considered dead?
cells at the bottom of the epidermis gradually move upwards so new tissue can grow
What is psoriasis?
an autoimmune disorder in which the immune system attacks healthy skin cells, leading to rapid cell growth
How does minimal physical activity affect bone health?
does not promote bone strengthening and remodeling
What is hypercalcemia? How might it affect muscle contraction?
weakness; decreased muscle contraction
What is the rarest blood type?
AB negative