Describe the vasomotor response observed in the skin of animals
What will be an ideal response?
Answer: Heat is lost as blood travels through the vasculature of the skin. The pattern of flow can be altered by arteriovenous shunts known as arteriovenous anastomoses. Under warm environmental conditions, the shunts are constricted, forcing blood near the surface to enhance heat loss; when dilated, the blood travels deeper beneath the skin and heat loss is reduced.
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The left and right coronary arteries travel within the
A. interatrial septum. B. interventricular septum. C. anterior interventricular sulcus. D. posterior interventricular sulcus. E. coronary sulcus.
Which is not true about synovial joints?
A. All articulating bone surfaces are covered with articular cartilage. B. Synovial joints are enclosed by fibrous articular capsules. C. Synovial fluid is secreted by the synovial membrane. D. Ligaments strengthen and reinforce joints. E. Blood circulates within the joint cavity to nourish the articular cartilage.
Blood plasma is slightly _______; if pH drifts out of the normal range, dire consequences can result from alterations in the structure of _______
A. acidic, glucose B. acidic, proteins C. acidic, glycogen D. basic, glucose E. basic, proteins
Injured neurons can recover their functional capabilities if
A) the cells can divide enough times to replace those that are lost. B) the oxygen and nutrient supplies are restored. C) the cause of the damage is removed within a period of weeks. D) All of the answers are correct. E) None of the answers are correct.