Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
For all body systems |
Skin and hair provide barriers that protect all internal organs from damaging agents in external environment; sweat glands and skin bloodvessels regulate body temperature, needed for proper functioning ofother body systems. |
|
|
Skeletal system |
Skin helps activate vitamin D, needed for proper absorption of dietary calcium and phosphorus to build and maintain bones. |
|
|
Muscular system |
Skin helps provide calcium ions, needed for muscle contraction. |
|
|
Nervous system |
Nerve endings in skin and subcutaneous tissue provide input to brain for touch, pressure, thermal, and pain sensations. |
|
|
Endocrine system |
Keratinocytes in skin help activate vitamin D to calcitriol, a hormone that aids absorption of dietary calcium and phosphorus. |
|
|
Cardiovascular system |
Local chemical changes in dermis cause widening and narrowing of skin blood vessels, which help adjust blood flow to skin. |
|
|
Lymphatic system and immunity |
Skin is “first line of defense” in immunity, providing mechanical barriers and chemical secretions that discourage penetration and growth of microbes; Langerhans cells in epidermis participate in immune responses by recognizing and processing foreign antigens; macrophages in dermis phagocytize microbes that penetrate skin surface. |
|
|
Respiratory system |
Hairs in nose filter dust particles from inhaled air; stimulation of pain nerve endings in skin may alter breathing rate. |
|
|
Digestive system |
Skin helps activate vitamin D to the hormone calcitriol, which promotes absorption of dietary calcium and phosphorus in small intestine. |
|
|
Urinary system |
Kidney cells receive partially activated vitamin D hormone from skin and convert it to calcitriol; some waste products are excreted from body in sweat, contributing to excretion by urinary system. |
|
|
Reproductive system |
Nerve endings in skin and subcutaneous tissue respond to erotic stimuli, thereby contributing to sexual pleasure; suckling of a baby stimulates nerve endings in skin, leading to milk ejection; mammary glands (modified sweat glands) produce milk; skinstretches during pregnancy as fetus enlarges.
|
