Definitions Chapter 3 Flashcards
Alveoli Definition
A cluster of sacks at the end of the bronchiole where gas exchange takes place.
Anus Definition
A sphincter muscle at the end of the digestive tract.
Artery Definition
A blood vessel that carries blood away from the heart.
Bladder Definition
A muscular bag where urine is stored before it is expelled from the body.
Bronchi Definition
Tubes formed by the division of the trachea.
Bronchioles Definition
Small tubes formed by the division of the bronchi.
Cholesterol Definition
A fatty chemical that can cause blockages in arteries.
Deoxygenated blood Definition
Blood with very little oxygen and lots of carbon dioxide
Liver Definition
The largest internal organ, it produces bile
Oesophagus Definition
The part of the digestive system that connects the mouth to the stomach
Organ Definition
A structure that contains at least two different types of tissues that work together to complete a task.
Pancreas Definition
An organ associated with the digestive system that produces chemicals to help the digestion of carbs fats and proteins
Peristalsis Definition
The process of pushing food through the digestive tract by alternating between contracting and relaxing muscles in a wave like motion.
Respitory System Definition
The system of organs and tissues that takes air into the body.
Saliva Definition
Watery liquid containing a chemical that acts as a lubricant that eases the path of food down the oesophagus
Small intestine Definition
The longest part of the digestive tract
Tissue Definition
A group of cells of the same type that carry out the same job in the body.
Urea Definition
A waste product from the breakdown of proteins
Urethra Definition
A tube that carries urine to the outside of the body.
Vein def
Blood vessel that carries blood back to the heart.
Villi Definition
Microscopic finger like projections that increase the surface area of the small intestine.
Large intestine Definition
The final section of the digestive tract
Digestive system Definition
The system of the body where digestion takes place
Digestion Definition
The process of breaking down food into a useable form.
Diaphragm Definition
A sheet of muscle that separates the chest from the abdomen
