B3.1/B3.2/B3.3 - Digestion Flashcards
cells
the basic building blocks of life
tissues
a group of similar cells that work together to perform a specific function
organs
a group of tissues that work together to perform a specific function
Example of multiple types of tissues in one organ
stomach:
-muscular tissue
-glandular tissue
-epithelial tissue
muscular tissue in the stomach
churns food
glandular tissue in the stomach
produces digestive juices
epithelial tissue in the stomach
covers inside/outside of organ
organ system
a group of organs that depend on each other to carry out their function
example of organ systems
-digestive system
-circulatory system
organism
all the organ systems work together to allow full function
digestive system
where food is digested and absorbed
Pancreas functions
1 - makes hormones o control blood sugar
2 - produces some enzymes to digest food
How is he pancreas able to perform many functions
it produces secretions for its functions from two different types of tissue
Adaptations of small intestine
-villi
-small folds
-good blood supply
-cell-thick layer
villi purpose in small intestine
internal surface is covered with millions of this
-increases surface area for diffusion
good blood supply purpose in small intestine
-maintains concentration gradient for diffusion