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Nails

protects and stiffens distal tips of digits

Hair follicles

produce hair

bone marrow

acts as primary site of red and white blood cell production

bone

support, protects soft tissue

heart

propels blood

blood vessels

distribute blood through the body

Brain

performs complex integration functions

spinal cord

relays information to and from brain

pineal gland

may control timing of reproduction

pancreas

regulates blood glucose levels

spleen

monitors circulating blood

lymph nodes

monitors the composition of lymph

trachea

filters air

larynx

protects opening to trachea

liver

secretes bile

stomach

secretes acids and enzymes

kindeys

from and concentrate urine

urethra

conducts urine to exterior

testes

produce sperm and hormones

prostate gland

secretes fluid and enzymes

ovaries

produces oocytes and hormones

mammary gland

produce milk

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