Explanation

Digestion begins in the mouth, where food is chewed and mixed with saliva that contains enzymes to break down carbohydrates. 

Here's a brief overview of the digestion process:

• Mouth: Food is chewed and mixed with saliva that contains enzymes to break down carbohydrates.
• Esophagus: Food is swallowed and passes through the esophagus into the stomach.
• Stomach: Food is mixed with stomach acid and enzymes to break down proteins and fats.
• Small Intestine: Nutrients are absorbed into the bloodstream.
• Large Intestine: Water and electrolytes are absorbed, and waste is eliminated.

Explanation

• Storage: Holds food temporarily
• Mechanical and chemical breakdown: Mixes and digests food with enzymes and acids
• Liquification: Converts food into a liquid mixture (chyme)
• Emptying: Releases chyme into the small intestine for nutrient absorption

Explanation

The stomach is a J shaped sac about one foot in length that lies under the diaphragm on the left of the abdominal cavity.

The stomach has three parts:

1. The region where the stomach opens is known as the cardiac stomach.
2. The main body is known as fundus.
3. The posterior portion which opens to the intestine is known as the pyloric stomach.

Explanation

• When you swallow food, sweets, or drinks, they pass through the esophagus and enter the stomach.
• Where they are mixed with digestive enzymes and acids to break down proteins, carbohydrates, and fats.

Explanation

• Most headaches are caused by irritation or inflammation of the nerves in the head and neck, rather than the brain itself.
• This can be due to various factors such as tension, stress, or medical conditions.

Explanation

• The adult human brain weighs about 3 pounds (1,300-1,400 g).
• The adult human brain is about 2% of the total body weight.
• The average human brain is 140 mm wide.
• The average human brain is 167 mm long.

Explanation

• Skull forms a protective covering for the brain.
• The main and overall function of the skull is to protect the brain and sensory organs and support facial structures.
  

Explanation

• The brain, situated in the cranial cavity is an important internal organ.
• It is the control centre of our body.
• It controls the movements and all that we do.
• The brain is protected by the skull.

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

Science is the systematic study of the nature and behavior of the material and physical universe, based on observation, experiment, and measurement, and the formulation of laws to describe these facts in general terms.