Anus, Other Subject

Assignment Help:

The anus is the last part of the digestive tract. It is a 2-inch long canal consisting of the pelvic floor muscles and the two anal sphincters (internal and external). The lining of the upper anus is specialized to detect rectal contents. It lets you know whether the contents are liquid, gas, or solid. The anus is surrounded by sphincter muscles that are important in allowing control of stool. The pelvic floor muscle creates an angle between the rectum and the anus that stops stool from coming out when it is not supposed to. The internal sphincter is always tight, except when stool enters the rectum. It keeps us continent when we are asleep or otherwise unaware of the presence of stool. When we get an urge to go to the bathroom, we rely on our external sphincter to hold the stool until reaching a toilet, where it then relaxes to release the contents.

Most of the digestive tract is a tube composed of four layers:

The serosa, or outermost layer.

The muscularis externa, whose two sets of muscles produce the waves of contraction, called peristalsis, that move food along.
The submucosa, which contains blood vessels and nerve tissue that control digestion. The mucosa-epithelial layer, which absorbs digested food.


Related Discussions:- Anus

Neuropsychology, Discuss how the viewpoint of neuropsychology differs from ...

Discuss how the viewpoint of neuropsychology differs from general psychology. How does one school of thought influence another? Why is it important to understand multiple perspecti

Abnormal clinical or lab results, You are a new graduate nurse on your seco...

You are a new graduate nurse on your second rotation in a 30-bed medical ward. It is 0800hrs on your morning shift and you have been allocated the care of a 69-year-old female who

Anthropology, Anthropology- The word anthropology itself tells the basic st...

Anthropology- The word anthropology itself tells the basic story. From the Greek anthropos ("human") and logia ("study"), it is the study of humankind, from its beginnings millions

Drainage basin, Drainage Basin: A drainage basin is a naturally occurring ...

Drainage Basin: A drainage basin is a naturally occurring extent of land which serves as a funnel to channel precipitation and excess water to a nearby river or stream. They are a

The man who has no inner life is a slave to his surroundings, how to write ...

how to write a essay writting on the man who has no inner life is a slave to his surroundings what is mean by the man who has no inner life is a slave to his surroundings

Explain with examples the implications of queues, QUESTION 1 (a) Discus...

QUESTION 1 (a) Discuss the four distinctive characteristics of services, and illustrate them with reference to a service product such as a restaurant (b) Outline the ‘gaps'

Need price quote, Hello: I am considering using your services for 3 assign...

Hello: I am considering using your services for 3 assignments. I am a current PhD student, and my work schedule has created some major challenges for me. I have an assignment du

Theory of career development, Question: a) Describe in detail, one theo...

Question: a) Describe in detail, one theory of career development and one theory on decision making. b) Describe how these theories, you outlined, contribute to effective

Explain any five differences between dyeing and printing, Question 1 Expla...

Question 1 Explain any five differences between dyeing and printing Question 2 Describe any five synthetic dyes along with its suitability and properties Question 3

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd