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