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S3 Body Systems [2024]
Glossary FCs
32
Biology
Not Applicable
10/20/2024

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Term
circulatory system
Definition
the body system made up of the heart, blood vessels and blood
Term
arteries
Definition
blood vessels that take blood away from the heart to capillaries
Term
veins
Definition
blood vessels that take blood from capillaries back to the heart
Term
capillaries
Definition
network of small blood vessels connecting arteries and veins
Term
capillaries
Definition
blood vessels where oxygen, glucose and carbon dioxide are exchanged between blood and body cells
Term
vena cava
Definition
main vein, takes blood to the right atrium
Term
aorta
Definition
main artery, takes blood from the left ventricle
Term
atria
Definition
top two chambers in the heart
Term
ventricles
Definition
bottom two chambers in the heart
Term
valves
Definition
prevent back flow of blood in the heart
Term
pulmonary artery
Definition
artery that takes blood from the right ventricle to the lungs
Term
pulmonary vein
Definition
vein that takes blood from the lungs to the left atrium
Term
deoxygenated
Definition
type of blood in the right side of the heart
Term
oxygenated
Definition
type of blood in the left side of the heart
Term
ratio calculation
Definition
calculation that involves finding a factor common to both values and dividing them by the common factor
Term
trachea
Definition
wind pipe, connects the nose and mouth to the bronchi
Term
bronchi
Definition
airways that branch off from the trachea and take air to each lung
Term
bronchioles
Definition
tiny airways that branch off the bronchi
Term
alveoli
Definition
Microscopic air sacs at the end of the bronchioles. Site of gas exchange in the lungs
Term
diffusion
Definition
Process that moves oxygen from the air to the blood and carbon dioxide from the blood to the air in the alveoli
Term
homeostasis
Definition
maintenance of a constant internal environment by the body
Term
thermoregulation
Definition
Control of body temperature so that it stays at a set point
Term
hypothalamus
Definition
Part of the brain where the thermoreceptors are
Term
nerve impulses
Definition
Signals sent from the hypothalamus to regulate body temperature
Term
37oC
Definition
Core body temperature
Term
glucose
Definition
Simple sugar needed by all cells for respiration
Term
pancreas
Definition
Organ that has receptor cells for blood glucose levels and cells that can release insulin and glucagon
Term
liver
Definition
Organ that has the main store of glycogen
Term
glycogen
Definition
Storage carbohydrate
Term
hormone
Definition
A chemical messenger that travels in the blood
Term
insulin
Definition
Hormone, released by the pancreas; causes the liver to convert glucose to glycogen
Term
glucagon
Definition
Hormone, released by the pancreas; causes the liver to convert glycogen to glucose
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