Home > Uncategorized > Human Anatomy: Digestion 3

Human Anatomy: Digestion 3

Today we’ll pick up part 3 of our 5 part digestion series. The lecture clocks in at around 40 minutes.

The esophagus is a ten inch long muscular tube carrying food from the laryngal pharynx to the stomach.

The vertebral column is an anatomical yardstick. The spinal process on the back of the neck is C7. Top of the heart is T2.
CTL SC 7 12 554
C6 to T10 is the esophagus to the stomach.

Peristalsis describes the muscular wave of moving food down the tube.

The stomach is a j shaped muscular organ in the left upper quadrant of the abdominal cavity. The liver is above it and to the right. The pancreas is below the stomach. The appendix is in the right lower quadrant. Right upper quadrant pain indicates liver or gallbladder pain. Left upper quadrant indicates stomach or pancreas.

The stomach has ridges or ruga. The pyloric sphinctor is at the bottom of the stomach, to allow one way flow.

The geater omentum cushions and protects the internal viscera. The stomach does very little digestion or absorption. Its main job is to buffer or delay food admittance.

HCl kills bacteria and sterilizes food. Pepsinogen is an inactive form of pepsin. Turns protein into polypeptides. 1-4 hours is how long it takes for the stomach to empty into the SI.

Gastroesophageal spincter is at the top. Pyloric stenosis is when a baby seems to be losing weight, unable to digest food. If you can press on the baby’s stomach and the food comes right back up, PS is a prime suspect.

Vomiting is a val salva manuver, tightening the stomach to expel something.

Nucleophile: negative, has electrons available, less electronegative
Nucleophiles are electon donors, electrophiles are electron acceptors.
•S – Size Up the Situation
• U – Use All Your Senses, Undue Haste Makes Waste
• R – Remember Where You Are
• V – Vanquish Fear and Panic
• I – Improvise
• V – Value Living
• A – Act Like the Natives
• L – Live by Your Wits, But for Now, Learn Basic Skills
Human Decomposition: 1 week in air=2 weeks in water=8 weeks in soil

Categories: Uncategorized
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