the small intestine and active transport

What are the 2 muscles found inside the small intestine

Circular muscles and longnitudal muscles

What are the 2 function of muscles

Contracting ,relaxing

What does another muscle do when one contracts

The other relaxes

Define diffusion

The NET movement of particles from area of HIGH to LOW concentration down a CONCENTRATION gradient until EQUILIBRIUM is reached

Where is most water absorbed in the digestive system

The small intestine

What part does protein digestion begin

The stomach

What is the 2 parts of the small intestine and is it long

The duodenum and the ileum and it’s very long (can reach up to 7m)

What is the function of the small intestine

Absorbs nutrients into the blood

What is the function if the villi

Increases the surface area of the small intestine to help with its function

What are the 2 vessels in the villi

Blood capillaries and lacteal

What surrounds the villi and what’s it function and does it have hair?

Cells known as micro villi which increasses the surface area of the villi and yes it has hair on the top of its cell

What is the Lacteal absorbs

Fatty acids and glycerol

What is active transport

When substances pass from the lumen of the small intestine into the blood

What does active transport require

It requires energy (known as ATP) and protein carries

What concentration does it move from and what does it HAVE to move accrss

It moves from low to high concentration and it’s the movement of particles across a membrane