Which system enables movement of the body through the contraction and relaxation of muscles?

Muscular System
What is the smallest unit of life in the human body?
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A cell
What is the longest bone in the human body?

The femur
What is the main function of the heart?

Pumping oxygen rich blood throughout the body.
How does the body regulate its temperature when it's hot?

Sweating
What system is in charge of transmitting messages between the brain and the rest of the body?

Nervous System.
What are groups of similar cells called?

Tissues
How many bones does an adult human have?

206.
Name the gas that is exhaled from the lungs during respiration.

Carbon Dioxide.
How does the muscular system work when the body is cold?
The muscular system generates heat through shivering, which is the involuntary shaking of the body.
Which system defends the body against diseases and infections?

Immune System.
What term describes a group of organs working together to perform a specific function?
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Organ System
Describe how the muscular system works with the skeletal system to enable movement.
Muscles attach to bones and work together with the skeletal system to produce movement.
When muscles contract, they pull on bones, causing them to move at joints.
Describe the journey of food through the digestive system.

Mouth -> Esophagus -> Stomach -> Small Intestine -> Large Intestine.
The main function of the nervous system is to?

Send messages and signals between different parts of the body.
Describe how the circulatory system and respiratory system works together to deliver oxygen throughout the body.

Respiratory system - inhales oxygen.
Circulatory system - takes the oxygen from the lungs and distributes it to the rest of the body through the blood.
Give an example of an organ system and its main function.
sample: Circulatory System - transports blood and nutrients throughout the body.
How does the skeletal system work to protect the respiratory and circulatory system?
The skeletal system provides structural support and protection to vital organs such as the heart and lungs. For example, the rib cage protects the heart and lungs from injury.
What is the primary role of the kidneys in the body?

Filtering waste products from the blood and producing urine.
Explain how the integumentary system protects the body from diseases.

The integumentary system, which includes the skin, serves as a physical barrier that prevents diseases from entering the body.