anatomy-exam 2(chpt.4,5,&6)

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the embryonic germ layer that is the source of connective tissue and muscle is

mesoderm

what is the microscopic study of tissues

histology

the extracellular material found in connective tissue is called

matrix

epithelial tissue is characterized by

tightly packed cells

which of the following is a function of epithelial tissue

secretion and absorption of molecules

the various types of epithelium are classified by

the shape of cells and number of cell layers

which of the following categories of epithelium is based on cell shape

columnar

stratified epithelium consists of

multiple layers of cells

the layer of epithelium that covers the skin is called the

epidermis

the proper sequence of events in bone repair is

hermatoma formation, callus formation, callus ossification, remodeling of bone

which of the following statements regarding calcium homeostasis is true

when blood calcium levels are too low osteoclast activity increases

normal bone growth requires adequate amounts of______,______,and_____in the diet

calcium, phosphate,and vitamin D

the longitudinal growth of long bone ceases when

the epiphyseal plate is completely replaced with bone tissue

the sequence of events that produces growth at the epiphyseal plate is

proliferation, hypertrophy, calcification, cell death, ossification, and remodeling

which of the following statements about bone growth is true

endochondral growth in long bones occurs at the epiphyseal plate

ossification that involves replacing cartilage what bone is

endochondral

the spaces between developing skull bones that have not ossified are called

fontanels

which of the following events occurs last in the intramembranous ossification

cancellous bone is formed

intramembranous ossification

forms the bones of the roof of the skull

an x-ray determines that Peter fractured the shaft of his humerus. the break is in the_____of the bone

diaphysis

spaces in the bone matrix that are occupied by osteocytes are

lacunae

you would look for concentric lamellae

around the central canal of an osteon

cancellous bone tissue

contains interconnecting plates called trabeculae

which of the following is associated with osteoclast resorption of bone

hydrogen ions form an acid environment in bone matrix

which type of bone cells have processes that lie in canaliculi

osteocyte

the compression (weight-bearing) strength of bone matrix is due to the presence of

hydroxyapatite crystals

which of the following matrix molecules in cartilage tends to trap large quantities of water

proteoglycan

the connective tissue sheath of cartilage is called the

perichondrium

the type of cartilage associated with bone function and development is

hyaline cartilage

chondroblasts produce

cartilage matrix

barney sat on a hot camp stove while on a camping trip. the burn was painful and blistered. his was what type of burn?

second degree

intact skin provides protection because

it forms a physical barrier against entry of microbes

the stratum corneum beneath the free edge of the nail is the

hyponychium

nail cells are produced by the

nail matrix

sweat glands

aid in cooling the body

when the arrector pilli muscles contract

"goose bumps" form on the skin

an expanded knob at the base of the hair root

hair bulb

the outer surface of the hair is called the

cuticle

the length of hair is determined by the

rate of hair growth

the portion of a hair that protrudes above the surface of the skin is the

hair shaft

vitamin C is essential for normal collagen synthesis. if a child suffered from vitamin C deficiency, which layer of the skin would be most affected

reticular layer of dermis

if you accidentally cut your arm and see connective tissue and fat, which layer(s) was/were cut

stratum corneum, stratum basale, dermis, hypodermis (all of the above)

fingertips and footprints are produced by projection into the epidermis called

papillae

melanin is produced only by

melanocytes

a yellow pigment derived from plants that can impart yellow color to the skin is

carotene

melanin

is absent in individuals known as albinos

what will develop when the skin is subjected to excess friction or pressure

callus

thick skin

is found in areas subject to pressure or friction such as palms

which of the following represents the correct order of the layers of the epidermis from the deepest to the most superficial

stratum basale, stratum spinosum, stratu m granulosum, stratum lucidum, and stratum corneum

what protein is found in the nails, hair, and epidermis

keratin

which layer of the epidermis is found only in a few areas of the body

stratum lucidum

the term "stratum germinativum: is sometimes used to refer to the

stratum basale

the layer of epidermis that undergoes mitosis and forms new epidermal cells is the

stratum basale

which of the following statements concerning the epidermis is true

the epidermis is nourished by blood vessels located in the dermis

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