Intrinsic Controls

Question 1

regulated by local centers

Answer 1

Intrinsic controls

Question 2

networks of the GI tract show rhythmic cycles of activity in the absence of neural stimulation

Answer 2

visceral smooth muscle

Question 3

undergo spontaneous depolarization and trigger the contraction of entire muscular sheets

Answer 3

pacesetter cells

Question 4

generates slow wave potentials, the GI’s basic electrical rhythm (BER), wavelike fluctuations in membrane potential, transmitted throughout smooth muscle via gap junctions

Answer 4

Pacesetter cells

Question 5

Pacesseter cells generate ______ wave potentials

Answer 5

slow

Question 6

is reached by the effect of various mechanical, neural and hormonal factors in the GI tract

Answer 6

threshold

Question 7

mechano-and chemoreceptors respond to

Answer 7

stretch, osmolarity and ph
Presence of substrate, and end products of digestion

Question 8

Initiate reflexes that activate or inhibit digestive glands

Answer 8

Intrinsic Control

Question 9

they initiate reflexes that mix lumen contents and move them along

Answer 9

Intrinsic Control

Question 10

responds to stretch, osmolarity, and pH as well as to presence of substrate, and end products of digestion

Answer 10

mechano-and chemoreceptors