Contraction happens before the first one is finished. Premature activation of the SA node, it fires, then somewhere else the conduction system fires again. So you have another beat coming through the system before the previous one was all the way through.
a. Atrial premature beats
b. Ventricle premature beats
c. Premature beats
Answer: c. Premature beats
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Fill in the blanks with the correct medical terms.
The special senses are part of the nervous system that includes (1) _____________. There are four special senses: (2) _____________, smell, taste, and (3) _____________. Each eye contains photoreceptors and supportive structures. Hearing, also known as (4) _____________., is centered within the (5) _____________. Some diseases of the eye are inherited, whereas others may result from injury, infection, or older age. (6) _____________, commonly known as “pinkeye,” is a common and easily treatable infection. On the other hand, (7) _____________ can cause a loss of vision in the eye. More common vision disorders are (8) _____________, or nearsightedness; (9) _____________, or farsightedness; and (10) , or reduction in vision due to age. The normal condition of the eye is called (11) _____________, which can be abbreviated to (12) _____________. Correcting vision disorders is usually attempted by the use of (13) _____________ following a vision examination by a(n) (14) _____________. Another medical professional, a(n) (15) _____________, is a physician who specializes in the study and treatment of diseases associated with the eyes. Two symptoms of the ear and hearing are (16) _____________ and (17) _____________. These are common and can be treated. If they persist, it may result in a chronic disease of the inner ear known as (18) _____________. The general term for inflammation of the ear is (19) _____________. In one form of this disease, the middle ear is involved to cause local pain and temporary loss of hearing. Known as (20) _____________, it is relatively common among children. In some severe cases of permanent hearing loss, the inner ear is surgically removed in a process called (21) _____________. The procedure involving the measurement of hearing is usually performed by a(n) (22) _____________ and is called (23) _____________. It is important to have regular eye and hearing checkups to preserve these special senses in advanced age.
Which of the following radiologic studies uses contrast dye to examine a joint?
A) arthrography B) cholecystography C) cholangiography D) pyelography
Which of the following best defines autoregulation?
a. the ability of the heart to contract automatically without neural stimulation b. the ability of the SA node to depolarize automatically c. the ability of the heart to conduct electrical current between the atria and ventricles d. the ability of blood vessels to alter their diameter
The stress response robs the system of vitamins and minerals needed for normal maintenance of organs and tissues
Indicate whether the statement is true or false