Vitamins

Vitamin K

Picture demonstrating stages of normal absorption of B12. Parietal cells release both intrinsic factor and components that form HCl-. HCl- activates pepsin. Together HCl- and pepsin digest proteins and free B12. Complex Formation in the duodenum. B12 and Intrinsic Factor form a complex. The complex travels to the terminal ileum where it is absorbed. Once absorbed B12 travels to the liver where it is stored.

Vitamin B12

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Special Circulations

Skeletal Muscle Circulation

by Arjun Nehra

Two diagrams depicting the two types of blood flow. (a) depicts laminar flow and (b) depicts turbulent flow.
Circulation

Blood Flow in Vessels

by Georgie Banks and Kaitlyn Whitelaw

Regulation

Renin-Angiotensin-Aldosterone System

by Jess Speller and Asad Hashmi