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Biology Chapter 38 Vocab
For 9th grade biology, these are the toughest words in Chapter 38
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Biology
9th Grade
04/16/2023

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Term
Calorie
Definition
amount of heat needed to raise the temperature of 1 gram by water by 1 degree Celsius
Term
Amylase
Definition
an enzyme that begins chemical digestion by breaking the chemical bonds in starches
Term
Esophagus
Definition
tube that food passes down in
Term
Peristalsis
Definition
contractions of smooth muscle that move food down to the stomach
Term
Stomach
Definition
a large muscular sac where chemical digestion continues
Term
Chyme
Definition
a mixture that flows to the small intestine
Term
Pancreas
Definition
gland located just behind the stomach that produces enzymes to break down macromolecules
Term
Liver
Definition
large organ located above the stomach that produces bile
Term
Villi
Definition
help in the absorption of nutrients by increasing the surface area for absorption in the small intestine
Term
Large Intestine
Definition
removes water from the undigested material that is left
Term
Ureter
Definition
a tube that leaves each kidney carrying urine to the bladder
Term
Urinary Bladder
Definition
saclike organ where urine is stored before being excreted
Term
Nephrons
Definition
functional unit of the kidney
Term
Filtration
Definition
passing a liquid or a gas through a filter to remove waste
Term
Glomerulus
Definition
small network of capillaries enclosed in the Bowman's capsule
Term
Reabsorption
Definition
the process by which liquid is taken back into a vessel
Term
Loop of Henle
Definition
section of nephron where water is mostly reabsorbed
Term
Urethra
Definition
a tube where urine is released
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