Anatomy and Physiology Basics Flashcard

Front

What is the smallest unit of all living things in the human body?

Back

Cell

Answer explanation

The smallest unit of all living things in the human body is the cell. Cells are the basic building blocks of life, while organs, tissues, and systems are made up of groups of cells.

Front

Which of the following is NOT a major organ of the skeletal system? Options: Bones, Ligaments, Cartilage, Lungs

Back

Lungs

Answer explanation

The lungs are not part of the skeletal system; they are organs of the respiratory system. In contrast, bones, ligaments, and cartilage are all major components of the skeletal system.

Front

Which organ is NOT considered a major organ of the nervous system? Brain, Spinal cord, Heart, Nerves

Back

Heart

Answer explanation

The heart is not part of the nervous system; it is a major organ of the circulatory system. The brain, spinal cord, and nerves are all key components of the nervous system.

Front

A person touches a hot surface and quickly pulls their hand away. Which system is primarily responsible for this reaction?

Back

Nervous system

Answer explanation

The nervous system is responsible for quick reflex actions. When a person touches a hot surface, sensory neurons send signals to the spinal cord, which immediately triggers a motor response to pull the hand away.

Front

Which part of the nervous system is responsible for transmitting signals between the brain and the rest of the body?

Back

Spinal cord

Answer explanation

The spinal cord is a crucial part of the nervous system that transmits signals between the brain and the rest of the body, facilitating communication and coordination of bodily functions.

Front

What is the main function of the circulatory system?

Back

To transport nutrients and gases around the body.

Answer explanation

The main function of the circulatory system is to transport nutrients and gases around the body, ensuring that cells receive the necessary substances for energy and function.

Front

List two major organs involved in the digestive system and briefly describe their roles.

Back

The mouth and esophagus: the mouth chews food, and the esophagus transports it to the stomach.

Answer explanation

The correct choice is 'the mouth and esophagus' because the mouth is responsible for chewing food, while the esophagus transports the chewed food to the stomach, both essential functions in the digestive process.

Front

What is the primary function of the muscular system?

Back

Provides movement for all parts of the body.

Answer explanation

The primary function of the muscular system is to provide movement for all parts of the body. Muscles contract and relax to enable motion, making this choice the correct answer.

Front

What is one of the main functions of the integumentary system?

Back

Protects the body and regulates temperature

Answer explanation

The integumentary system, which includes the skin, serves to protect the body from external damage and helps regulate temperature through sweat and blood flow, making 'Protects the body and regulates temperature' the correct choice.

Front

How does the integumentary system help to prevent water loss in the body?

Back

By forming a barrier with the skin

Answer explanation

The integumentary system prevents water loss primarily by forming a barrier with the skin. The skin's outer layer, the epidermis, is designed to be impermeable, reducing evaporation and retaining moisture in the body.