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SCI221 Physiology

week 5

QuestionAnswer
In bone growth, the medullary cavity is enlarged because of the activity of: osteoclasts
Blood calcium levels involve secretion of which two hormones? parathyroid and calcitonin
Normally, bone loss will begin to exceed bone gain between the ages of _____ years. 35 and 40
Which of the following may cause skeletal variations All of the above may cause skeletal variations
A condition that is caused by an abnormally increased roundness in the thoracic curvature is kyphosis
Which structures are unique to the fetal skull and provide additional space for molding the head shape as the baby passes through the birth canal? fontanels
After the age of 50, the density of bone: decreases slowly because of a shift in the remodeling activity.
Bones act as a reservoir for which of the following minerals? calcium phosphorus
The primary ossification center of a long bone is located: in the diaphysis
During childbirth, a baby passes through an imaginary plane called the: pelvic outlet
Appositional growth of cartilage occurs when chondrocytes begin to divide and secrete additional matrix
Hematopoiesis is carried out in the: red bone marrow
The humerus articulates proximally with the clavicle. False
If the cribriform plate is damaged, there is a chance of: infectious materials passing from the nose to the brain.
The following are functions of bone except for All of the above are functions of the bone
The human hand has greater dexterity than the forepaw of any animal because of the freely movable joint of the: thumb.
In intramembranous ossification, the process of appositional growth refers to the: addition of an outside layer of osseous tissue on flat bones.
Which of the following is not dependent on the proper amount of calcium ions in the blood? All of the above are dependent on the proper amount of calcium ions in the blood.
Which of the following is not a characteristic of the epiphyses? Cylindrical in shape
Which of the following is not one of the primary functions performed by bones? Hormonal production
When the knee is flexed, the patella can be easily distinguished. false
As the activity of osteoblasts increases, the: Both B and C occur.
Because of how the clavicle articulates with the scapula, all shoulder movements involve the sternoclavicular joint. true
Calcification of the organic bone matrix occurs when complex calcium salts are deposited in the matrix.
Young children’s bones have a greater risk of fracturing because of incompletely ossified bone. false
A person with a fractured patella would expect discomfort in the: knee
Bones grow in diameter by the combined action of which two of the three bone cell types? osteoblasts and osteoclasts
The humerus articulates proximally with the scapula
Which of the following is not a characteristic of the diaphysis? Provides a bulbous shape for attachment of muscle
One similarity between the structures of the foot and hand is the equivalent degrees of movement of both the thumb and the big toe. false
Created by: yessileyva
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