Energy for contraction of myocardial cells comes primarily from
A. aerobic respiration in the mitochondria.
B. anaerobic respiration in the cytosol.
C. glycolysis in the cytosol.
D. ATP that is stored while the heart is not contracting.
E. creatine phosphate.
A
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Carbohydrates, lipids, and proteins are classified as
A) organic molecules. B) inorganic molecules. C) acids. D) salts. E) bases.
Before beginning orthodontic treatment, a patient may have her wrist and hand x-rayed to determine her stage of growth. What feature of the long bones will the orthodontist use to assess this?
A. Osteon B. Periosteum C. Spongy bone D. Epiphyseal plate E. Compact bone
The adjustment of blood flow to each tissue in proportion to its requirements at any point in time is termed autoregulation
Indicate whether the statement is true or false
The amount of oxygen released from oxyhemoglobin increases when
A) carbon dioxide concentration decreases. B) carbon dioxide concentration increases. C) blood becomes more alkaline. D) temperature decreases.