List and briefly describe the major functions of the skin
What will be an ideal response?
The functions of the skin include: 1) Thermoregulation: The skin thermoregulates in response to increased temperature by secreting sweat onto its surface and then increasing blood flow to the surface leading to cooling of the blood. In response to low temperatures, production of sweat is decreased and blood flow is diverted from surface to conserve heat. 2) The skin contains 8-10% of the blood and thus serves as a blood reservoir. 3) The skin covers the body and provides protection using keratin, lipids, secretions like oil and sweat, and immunological defenses. 4) The skin can detect and respond to cutaneous sensations. 5) The skin helps in excretion and absorption. 6) The skin also can synthesize vitamin D.
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The ________ directs blood from the ________ of the heart to the lungs. Backflow of blood to the heart is prevented by ________. Blood from the lungs returns to the heart via ________.
Fill in the blank(s) with the appropriate word(s).
Fluid flowing from point G in the figure will go to which structure next?
a) N b) H c) I d) M e) K
Select the types of angular movements allowed at synovial joints.
A. Pronation B. Rotation C. Extension D. Abduction
The overall function of the extrinsic eye muscles is ______.
A. adjusting the eye shape for vision B. moving the eye around in the orbit C. opening and closing of eye D. changing the size of the pupil