Explanation

The number of bones in a human skull is 22

The human skull is generally considered to consist of twenty-two bones

• eight cranial bones
• fourteen facial skeleton bones

**

while

300 bones are there in a newborn infant.

The human hand has 27 bones

Explanation

Veins carry blood toward the heart.

They have valves to prevent the backward flow of blood due to low pressure, especially in the limbs.

Arteries do not have valves (except at the heart).

Capillaries are too small and thin to have valves.

Explanation

Polio (poliomyelitis) is a viral disease that primarily affects the nervous system,

Particularly the spinal cord, and can result in paralysis.

Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus.

The virus spreads from person to person

Explanation

The lungs are the primary organs responsible for breathing.

They allow oxygen to enter the body and carbon dioxide to be expelled.

The heart circulates the oxygenated blood, but the lungs are where the exchange of gases takes place.

Explanation

There are 26 bones in the human foot and 27 bones in the human hand.

The foot has:

• 7 tarsal bones
• 5 metatarsal bones
• 14 phalanges (toe bones)

The hand has:

• 8 carpal bones
• 5 metacarpal bones
• 14 phalanges (finger bones)

Explanation

Flat bones (e.g., skull, ribs, sternum) are thin and flattened.

They providing protection (e.g., for organs) and broad surfaces for muscle attachment.

Explanation

Sesamoid bones are extremely small bones found in within muscles or tendons (e.g., the kneecap or patella).

They protect tendons from stress and wear.

Explanation

 A stomach is an organ, made up of various tissues (epithelial, muscular, and connective),

They are not classified as a tissue type on their own

Bone, cartilage, and blood are all considered connective tissues.

Explanation

About 40-50% of the body's weight is due to muscles.

Muscles are the largest component in terms of body mass after bones.

The remaining body weight is distributed between bones, skin, organs, and other tissues.

Explanation

The midbrain controls the reflex actions of the eye, including the adjustment of the pupil size in response to light.

This function helps regulate the amount of light entering the eye to protect the retina and maintain clear vision.