Peristalsis Notes: Definitions & Explanations PDF | Download eBooks
Study Peristalsis lecture notes PDF with biology definitions and explanation to study “What is Peristalsis?”. Study peristalsis explanation with biology terms to review biology course for online degree programs.
Peristalsis Definition:
Peristalsis is the alternating waves of contraction and relaxation in the smooth muscles lining the canal that helps to push the food down.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Peristalsis Notes:
Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube in the downward direction. In much of a digestive tract such as the human gastrointestinal tract, smooth muscle tissue contracts in sequence to produce a peristaltic wave, which propels a ball of food along the tract. Peristaltic movement comprises relaxation of circular smooth muscles, then their contraction behind the chewed material to keep it from moving backward, then longitudinal contraction to push it forward.
Keep Learning with Biology Notes
What is Systolic pressure?
Blood pressure is usually expressed in terms of the systolic pressure (maximum during one heartbeat) over diastolic pressure (minimum in ...
What are Sex chromosomes?
Sex chromosomes are those that determine the sex of an individual. For example a female inherits XX and a male ...
What are Malpighian tubes?
The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids, and tardigrades. ...
What is Counter current exchange?
Counter current exchange is the mechanism by which some property of a fluid, such as heat or a chemical substance, ...
What is Philadelphia chromosome?
The Philadelphia chromosome or Philadelphia translocation (Ph) is a specific genetic abnormality in chromosome 22 of leukemia cancer cells (particularly ...
What is Nitrogen fixation?
Nitrogen fixation is a process by which nitrogen in the air is converted into ammonia (NH3) or related nitrogenous compounds. ...