These rapid signals travel along neurons to allow the body to react almost instantly to changes in the environment.
What are electrical impulses?
The physical process that breaks food into smaller pieces without changing its chemical structure, i.e. chewing
What is mechanical digestion?
This gas must enter the bloodstream for cells to release energy during cellular respiration.
What is oxygen?
This tissue type provides structure and support for the body and protects vital organs.
What are bones?
This disorder occurs when the body cannot properly regulate blood sugar due to problems with insulin.
What is diabetes?
This body system uses chemical messengers released into the bloodstream to regulate growth, stress, and metabolism over time.
What is the endocrine system?
The process that uses enzymes and acids to break food into simpler molecules the body can absorb.
What is chemical digestion?
These organs take in oxygen from the air and remove carbon dioxide from the body.
What are the lungs?
This flexible connective tissue is found at joints and in structures like the nose and ears.
What is cartilage?
This respiratory disorder makes it difficult to breathe due to narrowed airways and inflammation.
What is asthma?
This type of response occurs without conscious thought and helps protect the body from harm.
What is a reflex?
This organ is where most nutrients move from the digestive system into the bloodstream.
What is the small intestine?
These blood vessels carry oxygen-rich blood away from the heart to body tissues.
What are arteries?
This soft tissue found inside many bones produces red blood cells.
What is bone marrow?
This nervous system disorder involves repeated, uncontrolled electrical activity in the brain, causing uncontrollable spasming.
What is epilepsy?
During an emergency situation, this system is responsible for coordinating the body’s immediate response.
What is the nervous system?
This tube carries urine out of the body from the bladder, and is not involved in filtering blood.
What is the urethra?
This part of the blood transports hormones, nutrients, and wastes, but does not carry oxygen.
What is plasma?
This process gradually replaces cartilage with bone during growth and development.
What is ossification?
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?
These structures on target cells determine whether a hormone will have an effect.
What are receptors?
These microscopic functional units of the kidney are responsible for filtering blood and forming urine.
What are nephrons?
Damage to these lung structures would directly reduce oxygen diffusion and lower ATP production in cells.
What are alveoli?
This dense connective tissue anchors muscle to bone, allowing force to be transferred during movement.
What is a tendon?
This inherited blood disorder causes red blood cells to become abnormally shaped, reducing their ability to carry oxygen efficiently.
What is sickle cell anemia?