BIOA02H3 Lecture Notes - Lecture 8: Autonomic Nervous System, Glycogen, Cholesterol

19 views7 pages

whitedinosaur349

10 Mar 2016

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

hans15149 and 39222 others unlocked

BIOA02H3 Full Course Notes

Verified Note

43 documents

Document Summary

These are the 4 layers of the tube that goes from mouth to anus. Though the esophagus doesn"t have the first layer but has the rest 3. Mucosa: epithelial and glandular cells, inner layer, inside the tube, often secrets something or absorbs nutrients/ vitamins, lines inside of gut. Muscularis muscular tissue: 2 layers talks about the direction of the fibres. Longitudinal layer: oblique layer only found in stomach. Serosa: on the outside, lubricating double membrane system of connective tissue, the outside and inside layer is attached, continuous with mesentery, lines the entire abdominal cavity, for protection. If the stomach punctured and the deadly hydrochloric acid leaked out it wouldn"t leak out in the whole abdominal cavity it would get caught in this. Sphincters: powerful rings of smooth muscle form valves between major regions of the digestive tract, control passage of digestive contents, they stop back movement, control what enter the abdominal cavity, involuntary.

Related Questions

1. Which organ is responsible for balancing the amount ofglucose floating around in the blood? (it stores excess glucosewhen there is too much and releases glucose into the bloodstreamwhen there isn't enough)

Select one:

a. liver

b. pancreas

c. spleen

d. stomach

2. The gastrointstinal tract has 4 basic layers. Which layer isthe one that comes in contact with the food that you eat?

Select one:

a. serosa

b. submucosa

c. muscularis

d. mucosa

3. Which digestive organ contains 3 layers of muscle tissue inthe muscularis?

Select one:

a. esophagus

b. large intestine

c. stomach

d. anus

The esophagus is the first organ in the digestive tract thatsecretes digestive enzymes to begin the chemical (molecular)breakdown of food.

Select one:

True

False

Gastric ulcers are often caused by bacterial infection.

Select one:

True

False

Lactose intolerance causes gas, bloating and stomach achesbecause undigested sugar molecules, called lactose, end up gettingdigested by bacteria in the intestines. When they digest it, theyproduce lots of gases.

Select one:

True

False

7. The lower esophageal sphincter prevents food in the stomachfrom backing up into the esophagus.

Since the esophagus is not equipped to handle the harsh acids inthe stomach, when food (mixed with stomach acids) does back up intothe esophagus, you get symptoms such as heart burn. This is calledgastroesophageal reflux (or "reflux").

When reflux is left untreated for many years, the person becomesa trisk for esophageal cancer. This is because the esophagus gets"burned" by the acids over and over again which can eventuallytrigger the development of cancerous cells.

Select one:

True

False

Peristalsis is defined as the rhythmic contractions of thedigestive system that pushes food along the digestive tract.

Select one:

True

False

tealgoat796

BIOA02H3 Lecture Notes - Lecture 8: Autonomic Nervous System, Glycogen, Cholesterol

BIOA02H3 Full Course Notes

Document Summary

Get access

Related Documents

BIOA02H3 Lecture Notes - Lecture 20: Autonomic Nervous System, Cecum, Bilirubin

BIOA02H3 Study Guide - Midterm Guide: Cecum, Extracellular Fluid, G Cell

BIOA02H3 Study Guide - Midterm Guide: Ventral Nerve Cord, Bone Marrow, Efferent Nerve Fiber

Related Questions