Smooth muscle

Question 1

where can smooth muscle be found

Answer 1

arteries and stomach

Question 2

what are the three layers of the artery and what are their compositions?

Answer 2

tunica intima: single, flat layer (endothelium)
tunica media: composed of smooth muscle
tunica adventitia: composed of elastic connective tissue and often has fibers

Question 3

what are the characteristics of smooth muscle cells?

Answer 3

wide middle and tapered
fusiform shape: like a dolphin
solid, not a lot of space like cardiac muscle
elongated, single nuclei

Question 4

2 layers of smooth muscle and their characteristics

Answer 4

inner: long axis of cells are arranged around the lumen
outer: long axis of cells are arranged along the lumen

they differ in direction!!!

Question 5

parts of the pyloric stomach

Answer 5

lumen, gastric pits, DICT, inner and outer layers of smooth muscle

Question 6

smooth muscle tissue is often bordered by…

Answer 6

connective tissue rich in collagen