Explanation

A deficiency of Vitamin D results in Rickets in children and osteomalacia in adults.

A deficiency of Vitamin D also causes:

• Bone Pain
• Weak Bones
•  Skeletal Deformities.

Sunlight is a good source of Vitamin D.

 Additional Information:

Vitamin A deficiency causes night blindness

Vitamin C deficiency causes scurvy 

Vitamin B (B7) deficiency causes hair fall

SH10-8-2023AGM 28.02.28ND16112023

Explanation

The human body typically has 206 bones

At the time of birth, there are 270 bones which fuse with time to come to a total of 206 bones.

The total bones of our body can be divided into:

• the axial skeleton (80) 
• the appendicular skeleton (126)

The newborn child has 300 bones.

Longest bone: Femur (thigh bone)

Shortest: Stapes (one of the 3 small bones inside the ear)

The human head has 22 bones.

Explanation

• The freezing point of water is 0°C (zero degrees Centigrade). 
• The boiling point of water on the Centigrade scale (also known as the Celsius scale) 100°C (one hundred degrees Centigrade).

Explanation

Because sound is just vibrating air, space has no air to vibrate and therefore no sound in a vacuum.

Sound waves below 20 Hz are known as infrasound.

Sound waves above 20 kHz are known as ultrasound

Sound waves transmit a medium such as a gas, liquid, or solid.

• The speed of sound in air is about 343 meters per second
• The sound travels at 1,481 m/s in water 
• The speed of sound in a vacuum is zero meters per second.

Explanation

The normal body temperature is: 37°C

The average normal body temperature is generally accepted as 98.6°F (37°C).

A temperature over 100.4°F (38°C) means you have a fever.

Additional Information:

Hypothermia is the term used for temperature less than 36.50°C

Mild Pyrexia is the term used for temperature (99-100°F)

Moderate Pyrexia is the term used for temperature (100-103°F)

Severe Pyrexia is the term used for temperature (103-105°F)

Explanation

Iron deficiency can lead to Anaemia, a condition characterized by:

• Low red blood cell count
• Pale skin
• Fatigue
• Shortness of breath
• Dizziness

Explanation

Goiter is caused by iodine deficiency.

It results in an enlarged thyroid gland.

Iodine deficiency can cause mental retardation in children.

Particularly if the deficiency occurs during fetal development or early childhood.

This is because iodine is essential for brain development and thyroid function.

The effects of the thyroid come from two iodine-containing hormones.

Explanation

• Omnivores are animals that eat both plants and animals.
• They have adaptations that allow them to digest and extract nutrients from a wide variety of food sources, including fruits, leaves, insects, small animals, and even carrion.
• Examples of omnivores include humans, bears, pigs, chimpanzees, and raccoons.

Explanation

Vitamin A deficiency can cause Night Blindness.

As well as other health problems such as:

• Dry skin and eyes
• Impaired immune function
• Poor wound healing
• Increased risk of respiratory and urinary tract infections

Explanation

• The SI unit of energy is the Joule (J).
• It is the unit of energy, work, and heat.