All of the following happen to the cardiovascular system as a result of aging and hypertension except what?
A. The vessels thicken and become less elastic.
B. The heart becomes less efficient due to decreased resting stroke volume which decreases cardiac output.
C. Vascular resistance increases with age in individuals with hypertension.
D. All of these happen to the cardiovascular system as a result of aging and hypertension.
Answer: D
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The striated appearance of skeletal muscle is due to the
a. orderly arrangement of the T tubules b. orderly arrangement of the lateral sacs of the sarcoplasmic reticulum c. orderly arrangement of the thick and thin filaments into A and I bands d. orderly arrangement of the motor units e. presence of white and red muscle fibers within the muscle
A decrease in Oxygen level in skeletal muscle would stimulate vasodilation?
a. true b. false
The aponeurosis of the external oblique forms the ________ at its inferior margin.
A. rectus sheath B. linea semilunaris C. medial retinaculum D. linea alba E. inguinal ligament
Which of these muscles helps to open the mouth?
A. Zygomaticus major B. Hyoglossus C. Depressor anguli oris D. Sternohyoid E. Digastric