Exam 3

Question 1

lymphatic system

Answer 1

chemical regulation of the body
blood cells mature and reside here
WBC go out of circulation and into the interstitial space where they are picked up my lymphatic vessels

Question 2

what is lymph?

Answer 2

the fluid
-rich in proteins (albumin, antibodies, etc.)
-delivers large molecules into circulatory system
-gets fluid into the bloodstream and regulates composition of plasma

Question 3

lymphatic vessels

Answer 3

contain no pump, nothing to generate pressure so fluid moves from high to low pressure

Question 4

lymphatic capillaries

Answer 4

single layer of epithelial cells (like shingles on a roof- they are loosely overlapped)
-smallest dead end vessels
-anchored in place by collagen fibers which makes them very permeable (they can pivot to open and close which allows fluid to move in)

Question 5

where are lymphatic capillaries not found?

Answer 5

bones, teeth, or nervous system
-not in solid body parts
-not with the blood-brain barrier

Question 6

lacteals

Answer 6

lymphatic capillaries in the intestines (found on the villi)

Question 7

what is lymph in the intestines called

Answer 7

chyle

Question 8

what do lacteals do

Answer 8

absorb certain nutrients (fats, proteins, and other big molecules) and delivers it to the circulatory system
-the body does not absorb proteins through the digestive system because the proteins are broken down into amino acids