Science Medical Admission Exam

Explanation
The adult human body has 206 bones. This is the correct answer because it is the widely accepted and documented number of bones in the human skeleton. The human skeleton is made up of the axial skeleton, which includes the skull, vertebral column, and rib cage, and the appendicular skeleton, which includes the bones of the limbs and the girdles that connect them to the axial skeleton. The 206 bones in the adult body provide structure, support, and protection for various organs and tissues, and they also allow for movement and mobility.

Explanation
A human baby's body has more than 300 bones. At birth, a baby has around 270 bones, but as they grow, some of these bones fuse together. By adulthood, the total number of bones reduces to 206. Therefore, the correct answer is "Over 300."

Explanation
The correct answer is the thigh bone. The thigh bone, also known as the femur, is the longest bone in the human body. It extends from the hip to the knee and is responsible for supporting the weight of the body and facilitating movement.

Explanation
The spinal cord is a long, cylindrical bundle of nerves that extends from the base of the brain to the lower back. It is responsible for transmitting signals between the brain and the rest of the body, allowing for communication and coordination of movement, as well as the transmission of sensory information. The spinal cord is not a muscle, bone, or artery, but rather a crucial component of the nervous system.

Explanation
The human body has two main layers of skin: the epidermis and the dermis. The epidermis is the outermost layer and acts as a protective barrier against the environment. It is composed of several sublayers, including the stratum corneum and the basal layer. The dermis is the deeper layer and contains blood vessels, nerves, hair follicles, and sweat glands. These two layers work together to regulate body temperature, protect against pathogens, and provide sensation to touch and pressure.

Explanation
The liver is the largest organ inside the body. It is responsible for various important functions such as detoxification, metabolism of nutrients, production of bile, and storage of vitamins and minerals. It plays a crucial role in maintaining overall health and well-being.

Explanation
Anatomy is the study of the human body. It involves examining the structure and organization of different body parts, such as organs, tissues, and cells. This field of study helps us understand how the body functions and how different parts work together to maintain health. Astronomy is the study of celestial objects and phenomena in outer space, botany is the study of plants, and sociology is the study of human society and social behavior.

Explanation
There are generally considered to be five senses: sight, hearing, taste, smell, and touch. These senses allow us to perceive and interact with the world around us. Each sense plays a unique role in how we experience and understand our environment. While there may be other senses that are less commonly recognized, the five senses listed here are the most widely accepted.

Explanation
Arteries are the correct answer because they are the tubes that carry blood away from the heart. They have thick and elastic walls that help to maintain blood pressure and transport oxygenated blood to various parts of the body. Veins, on the other hand, carry blood back to the heart, nerves transmit signals throughout the body, and capillaries are tiny blood vessels that connect arteries and veins.

Explanation
When humans breathe in, they inhale oxygen from the air. During the process of cellular respiration, oxygen is utilized by the body's cells to produce energy. As a result of this process, carbon dioxide is produced as a waste gas and is then exhaled from the body through the lungs. Therefore, the waste gas that humans breathe out is carbon dioxide.

Explanation
Blood cells are typically red and white in color. Red blood cells contain a pigment called hemoglobin, which gives them a red color. These cells are responsible for carrying oxygen to different parts of the body. White blood cells, on the other hand, are colorless and play a crucial role in the immune system, fighting against infections and diseases. Therefore, the correct answer is red and white.

Explanation
The largest organ of the human body is the skin. It covers the entire body and serves as a protective barrier against external factors such as bacteria, UV radiation, and physical injuries. The skin also helps regulate body temperature, stores fat and water, and plays a crucial role in sensation and touch. Additionally, it is involved in the production of vitamin D and acts as a means of excretion through sweat.

Explanation
The correct answer is black because the color of the pupils in our eyes is determined by the amount of light that enters the eye. Pupils appear black because they are actually just openings that allow light to enter the eye and reach the retina. The black color is a result of the light being absorbed by the tissues inside the eye and not being reflected back out.

Explanation
Two-thirds of the human body is made up of water. This is because water is essential for various bodily functions such as digestion, circulation, temperature regulation, and waste removal. It is present in cells, tissues, and organs, helping to maintain their structure and function. Adequate hydration is crucial for overall health and well-being.

Explanation
The gluteus maximus is the largest muscle in the human body. It is located in the buttocks and is responsible for hip extension and external rotation. This muscle plays a crucial role in activities such as walking, running, and climbing stairs. Its size and strength make it the largest and most powerful muscle in the body.