Endocrine + Nervous
Digestive + Excretory
Cardiovascular+ Respiratory
Muscular + Skeletal
Disorders
100

These rapid signals travel along neurons to allow the body to react almost instantly to changes in the environment.

What are electrical impulses?


100

The physical process that breaks food into smaller pieces without changing its chemical structure, i.e. chewing 

What is mechanical digestion?

100

This gas must enter the bloodstream for cells to release energy during cellular respiration.

What is oxygen?

100

This tissue type provides structure and support for the body and protects vital organs.

What are bones?

100

This disorder occurs when the body cannot properly regulate blood sugar due to problems with insulin.

What is diabetes?

200

This body system uses chemical messengers released into the bloodstream to regulate growth, stress, and metabolism over time.

What is the endocrine system?

200

The process that uses enzymes and acids to break food into simpler molecules the body can absorb.

What is chemical digestion?

200

These organs take in oxygen from the air and remove carbon dioxide from the body.

What are the lungs?

200

This flexible connective tissue is found at joints and in structures like the nose and ears.

What is cartilage?

200

This respiratory disorder makes it difficult to breathe due to narrowed airways and inflammation.

What is asthma?

300

This type of response occurs without conscious thought and helps protect the body from harm.

What is a reflex?

300

This organ is where most nutrients move from the digestive system into the bloodstream.

What is the small intestine?

300

These blood vessels carry oxygen-rich blood away from the heart to body tissues.

What are arteries?

300

This soft tissue found inside many bones produces red blood cells.

What is bone marrow?

300

This nervous system disorder involves repeated, uncontrolled electrical activity in the brain, causing uncontrollable spasming.

What is epilepsy?

400

During an emergency situation, this system is responsible for coordinating the body’s immediate response.

What is the nervous system?

400

This tube carries urine out of the body from the bladder, and is not involved in filtering blood.

What is the urethra?

400

This part of the blood transports hormones, nutrients, and wastes, but does not carry oxygen.

What is plasma?

400

This process gradually replaces cartilage with bone during growth and development.

What is ossification?

400

This excretory system disorder occurs when solid crystals form from concentrated waste substances in the kidneys, often causing severe pain during urination.

What are kidney stones?

500

These structures on target cells determine whether a hormone will have an effect.

What are receptors?

500

These microscopic functional units of the kidney are responsible for filtering blood and forming urine.

What are nephrons?

500

Damage to these lung structures would directly reduce oxygen diffusion and lower ATP production in cells.

What are alveoli?

500

This dense connective tissue anchors muscle to bone, allowing force to be transferred during movement.

What is a tendon?

500

This inherited blood disorder causes red blood cells to become abnormally shaped, reducing their ability to carry oxygen efficiently.

What is sickle cell anemia?

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