Which layer of skin is the outermost?
-
Subcutaneous tissue
-
Dermis
-
Epidermis
-
Hypodermis
Which organ is known as the “food pipe”?
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Esophagus
-
Stomach
-
Trachea
-
Intestine
Which organ is called the "control center" of the body?
Which blood cells are responsible for immunity?
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Platelets
-
Red blood cells
-
White blood cells
-
Plasma proteins
Which hormone increases sodium reabsorption in the distal tubule?
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ANP
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ADH
-
Renin
-
Aldosterone
Which vitamin deficiency causes impaired night vision?
-
Vitamin D
-
Vitamin A
-
Vitamin C
-
Vitamin K
What separates the left and right sides of the heart?
-
Septum
-
Atrium
-
Aorta
-
Valve
What tube carries urine from the kidney to the bladder?
-
Ureter
-
Urethra
-
Vas deferens
-
Aorta
How many cranial nerves do humans have?
Where does digestion begin?
Mouth
Large intestine
Stomach
Small intestine