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the outer layer of the skin is the?
epidermis
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the mechanism of heat loss that depends upon evaporation is?
sweating
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the protein in epidermal cells that make the skin relatively waterproof is?
keratin
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the tissue that stores fat in subcutaneous tissue is?
adipose tissue
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the glands of the skin that are most concerned with the maintenance of body temp are?
eccrine
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in the dermis, the receptors for pain are?
free nerve endings
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vitamin D is formed in the skin when the skin is exposed to?
UV rays
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the layer of the dermis that contains capillaries to nourish the stratums germinativum of the epidermis is the?
papillary layer
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the part of the hair follicle that undergoes mitosis to form the hair is the?
hair root
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the part of the epidermis that undergoes mitosis is the?
stratum germinativum
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the protein that protects inner living skin from the damaging effects of uv rays is?
melanin
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the layer of the skin that, if unbroken, prevents the entry of most pathogens is the?
stratum corneum
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the type of burns that is characterized by painful blisters is the?
2nd degree burn
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cells that increase their secretion when stimulated by uv rays are?
melanocytes
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the secretion that prevents drying of ear drum?
cerumen
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at the ends of fingers and toes, nails are produced in structures called?
follicles
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many wbc which destroy pathogens that enter the breaks in the skin are found in the?
areolar connective tissue
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the dermis is strong because of the presence of?
collagen fibers
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for a person with extensive 3rd degree burn, serious potential problems are infection and
dehydration, loss of tissue fluid (both of these)
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some human hair functions to keep dust out of the?
eyes and nose
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all of the following are part of subcutaneous tissue except?
keratin
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the defensins produced in the epidermis provide protection against?
bacteria
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in cold weather, the arterioles in the dermis will?
constrict to conserve heat
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the cells that are able to pick up pathogens and transport them to lymph nodes are?
langerhans cells
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in the subcutaneous tissue, histamine is produced by _____ and contributes to the process of _____.
mast cells/ inflammation
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the largest bone of the arm and the leg are the?
humerous and femur
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the nurtrients that become part of the bone matrix are?
calcium and phosphorus
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the cells that produce bone matrix and those that reabsorb bone matrix are called?
osteoblasts/osteoclast
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red bone marrow is found in the?
spongy bone in flat and irregular bones
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red bone marrow produces these cells?
RBC, WBC, platelets
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all of the following are irregular bones except?
metacarpals
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the malleus, incus, stapes ae within the _____ bone and are concered with _____
temporal bone/hearing
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sutures are the _____ joins of the _____.
immovable/skull
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the frontanels of a baby's skull are made of ?
fibrous CT
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the vitamin necessary for efficient absorption of calcium and phosphorus by the small intestine is?
Vitamin D
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an example of a ball-and-socketjoint is the one between the ?
femur and hip bones
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for bones, terms "excercise" or "stress" means?
bearing weight
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these bones are all part of the axial skeleton except the ?
hip bone
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in the embryo, the bones and the arms and legs are first made of?
cartilage
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which bone is not part of the braincase that protects the brain?
mandible
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which hormone increase the rate of mitosis in growing bones?
growth hormone
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which of these joints is not a freely movable joint?
symphysis
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in the long bones of a child, the part of the bone that is actually growing is the?
epiphyseal disc
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the hormones that regulate blood calcium level by regulating calcium intake or output from bones are?
calcitonin and parathyroid
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the structure not directly involved in the functioning of a synovial joint is the?
marrow canal
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the largest and strongest vertebrae are the?
lumbar
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which of the following bones do not protect an internal organ?
phalanges
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the ligaments that connect bones are anchored to the?
periosteum
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the pituitary gland is direcly protect by the?
sphenoid bone
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the intervertebral discs are made of?
cartilage
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