How many bones are typically in the adult human body?

Rationale:
A. Cyanosis refers to a bluish discoloration of the skin, lips, or nail beds due to inadequate oxygenation of the blood or poor circulation. It is often seen in conditions such as respiratory distress, heart disease, or hypothermia.
B. Refers to redness of the skin, usually caused by increased blood flow to the capillaries in response to fever, inflammation, infection, or sunburn.
C. Pallor refers to paleness of the skin, often due to reduced blood flow, anemia, shock, or hypothermia.
D. Jaundice refers to a yellow discoloration of the skin and eyes caused by elevated bilirubin levels, often due to liver dysfunction or bile duct obstruction.

Rationale:
A. Flexion refers to decreasing the angle between two body parts, such as bending the elbow or knee.
B. Extension is the opposite of flexion, involving an increase in the angle between body parts, such as straightening the arm or leg.
C. Abduction is the movement of a body part away from the midline of the body, like lifting the arm or leg sideways.
D. Adduction involves moving a body part toward the midline of the body, such as bringing the arms back down to the sides or crossing the legs together. This movement is essential for coordinated limb positioning and maintaining balance.