BIOL-20: Unit 2 Lec quiz 1

How do hormones regulate the pattern of bone growth? -They ensure that intramembranous ossification occurs throughout life. -They don't; hormones are not involved in bone growth processes. -They change the rates of osteoblast and osteoclast activity. -They control the rate of movement of the epiphyseal line. -None of the answers are correct

They change the rates of osteoblast and osteoclast activity.

Bones of the skull that articulate with the zygomatic bone include (the) ________. -sphenoid -frontal bone -maxillary bone -temporal bone -all of the answers are correct

all of the answers are correct

Paranasal sinuses ________. -lighten skull bones -resonate during sound production -produce mucus -act as extensions of and open into the nasal cavities -all of the answers are correct

all of the answers are correct

The axial skeleton functions in ________. -the production of blood cells by the red marrow found in portions of the vertebrae, sternum, and ribs -providing an extensive surface for the attachment of muscles that adjust the positions of the head, neck, and trunk -housing special sense organs for taste, smell, hearing, balance, and sight -forming a framework that supports and protects organs in the ventral body cavities -all of the answers are correct

all of the answers are correct

in addition to osseous tissue, a typical bone contains _____. -smooth muscle tissues (in blood vessels walls) -other connective tissues -neural tissues -all of the answers are correct -none of the answers are correct

all of the answers are correct

A bone cell that secretes the organic components of bone matrix is ________. -an osteoblast -stimulated by activity of the thyroid gland -an osteoclast -located in a lacuna -an osteocyte

an osteoblast

The posterior tubercle is a part of the ________. -thoracic vertebra -sacral promontory -axis -atlas -vertebra prominens

atlas

What vertebra contains the dens? -atlas -axis -sacrum -cervical -None of the answers are correct.

axis

Increased levels of calcium in the blood of a pregnant woman would stimulate the secretion of ________, which would increase calcium loss in the urine. -growth hormone -parathyroid hormone -calcitriol -thyroid hormone -calcitonin

calcitonin

Which of the following spinal curvatures is/are convex anteriorly? -cervical and lumbar -thoracic and sacral -cervical only -sacral only -lumbar and thoracic

cervical and lumbar

Layers of bone that occur at the external and internal surfaces of the bone are referred to as ________. -circumferential lamellae -longitudinal lamellae -concentric lamellae -radial lamellae -interstitial lamellae

circumferential lamellae

Osseous tissue is classified as which of the following? -epithelial tissue -connective tissue -muscle tissue -neural tissue -None of the answers are correct.

connective tissue

The parietal, temporal, frontal, and occipital bones are part of (the) ________. -facial bones -axial skeleton -cranium -skull -None of the answers are correct

cranium

A long bone increases in length until ________. -appositional growth starts -death; bones grow as long as we are alive -expansion of the secondary ossification centers ends -the body runs out of calcium -epiphyseal closure occurs

epiphyseal closure occurs

Roofing bones of the skull form via ________ ossification. -endochondral -intrachondral -symphyseal -synovial -intramembranous

intramembranous

Which of the following statements is/are true of the growth of the skeleton? -it begins to ossify at eight weeks of gestational age -Calcification of bones does not occur until an infant begins to learn to walk. -All bone formation ceases immediately after the end of adolescence. -All of the answers are correct. -None of the answers are correct.

it begins to ossify at eight weeks of gestational age

the skeletal system participates in ______. -facilitating transmission of nerve impulses absorbing the shock of unexpected rapid body movements -cushioning abdominal organs such as the kidneys -maintaining bodily fluids calcium levels -All of the answers are correct.

maintaining bodily fluids calcium levels

The point of attachment for muscles that extend and rotate the head is the ________. -posterior clinoid process -mastoid process -external occipital protuberance -articular tubercle -styloid process

mastoid process

Mature bone cells that maintain and monitor the protein and mineral content of the surrounding matrix are called ________. -osteoprogenitor cells -osteoblasts -osteoclasts -osteocytes -osteoplasts

osteocytes

Which type of cell divides to produce daughter cells that can differentiate readily after a bone is cracked or broken? -osteocyte -osteoblast -red marrow cell -osteoclast -osteoprogenitor cells

osteoprogenitor cells

Which of the following acts on the intestine, requiring calcitriol production by the kidneys? -calcitonin -calcitriol -thyroid hormone -growth hormone -parathyroid hormone

parathyroid hormone

The lambdoid suture is the boundary between which bones? -parietal and temporal -parietal and occipital -frontal and nasal -parietal and frontal -frontal and sphenoid

parietal and occipital

Children whose bones bend laterally producing a bowlegged appearance is a result of ________. -rickets -Marfan's syndrome -gigantism -acromeagaly -osteomalacia

rickets

The depression that cradles and protects the pituitary gland is called the ________. -lesser wing -greater wing -sella turcica -crista galli -cribiform plate

sella turcica

Which of the following is a classification of bone shape? -square -round -triangular -sesamoid -indefinite

sesamoid

Which of the following sutures marks the boundary between the temporal bone and the parietal bone of each side of the skull? -coronal -frontonasal -sagittal -squamous -lambdoid

squamous

Which is a major function of the skeletal system? -production of ATP -support of the body -storage of glucose -maintenance of interstitial fluid composition -None of the answers are correct.

support of the body

The primary curves of the vertebral column are the ________. -cervical and thoracic -cervical, lumbar, and sacral -dorsal and ventral -thoracic and coccygeal -thoracic and sacral

thoracic and sacral

The function of an osteoclast in osseous tissue is ________. -to dissolve old bone matrix and release amino acids and the stored calcium and phosphate -to produce new bone matrix -to secrete the organic components of the matrix -to produce new osteoblasts -None of the answers are correct.

to dissolve old bone matrix and release amino acids and the stored calcium and phosphate

Which of the following is the active form of calcitriol? -vitamin C -vitamin A -vitamin D -calcium -sodium

vitamin D

The matrix of bone include ________. -calcium hydroxide -calcium phosphate -calcium carbonate -All of the answers are correct. -None of the answers are correct.

All of the answers are correct.

A(n) ________ fracture occurs at the ankle and affects both leg bones. -epiphyseal -greenstick -comminuted -Colles -Pott's

Pott's

An individual with otherwise normal features, but having very short limbs, may have a condition known as ________, in which epiphyseal cartilages grow unusually slowly. -Marfan's syndrome -osteomalacia -rickets -achondroplasia -gigantism

achondroplasia