The origin is the point of muscle attachment that is most stationary.
Answer the following statement true (T) or false (F)
True
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Which of the following is not true of veins?
a. Blood drains into them from venules. b. They carry blood back to the heart. c. They have a thicker tunica media than do arteries. d. Their innermost layer is called the tunica intima.
Which of the following is greater?
A) heart rate normally B) heart rate during circulatory shock
Bradycardia that occurs shortly after you have dressed and bandaged an open neck wound is MOST likely the result of:
A) decreased vagal tone secondary to direct injury to the vagus nerve. B) decreased venous return from the brain and an increase in intracranial pressure. C) an acute pulmonary embolism due to the entrainment of air into one of the jugular veins. D) parasympathetic nervous system stimulation due to excessive pressure on the carotid artery.
What are sinuses lined with?
A. Cartilage B. Connective tissue C. Mucous membranes D. Muscle