Explanation

• Veins are the blood vessels that carry blood from other parts of the body back to the heart.
• They have one-way valves that prevent blood from flowing backwards and ensure it keeps moving towards the heart.

Explanation

Explanation

Explanation

Accumulation of salts in kidneys leads to the formation of solid crystals called kidney stones.

These stones can block the flow of urine and cause severe pain and other complications.

Explanation

• Anemia can be caused by a deficiency of iron or vitamin B9 (folate).
• Iron deficiency impairs hemoglobin production.
• While vitamin B9 deficiency affects red blood cell formation.

Explanation

• The thickness of skin is around 2 millimeters (0.08 inches) thick.
• The skin has two main layers (epidermis - outer layer) and the (dermis - inner layer).
• The epidermis is about 0.05-1.5 millimeters thick.
• The dermis is about 1-4 millimeters thick.

Explanation

• In a normal man, the average heart beat is 72 times per minute.
• But it may vary from 70-80 beats per minute.

Explanation

• During breathing, the clean, moist, and warm air enters the windpipe called the Trachea.
• The trachea is also known as the windpipe.
• It is a tube that connects the throat (pharynx) to the lungs, allowing air to pass through during breathing.

Explanation

• The brain is the command center of the body, controlling everything from movement and sensation to thought and emotion.
• It processes information, sends signals to muscles and glands, and regulates various bodily functions, making it the central control system of the body.

Explanation

• There are around 639 skeletal muscles.
• The three main types of muscle include skeletal, smooth, and cardiac.
• The sartorius muscle is a thin, long, superficial muscle in the anterior compartment of the thigh.