Posted inCell
Male Chromosomes
Male chromosomes consist of 46 total, including 22 autosomal pairs and one X and one Y sex chromosome determining maleness via SRY gene triggering testicular development, with Y carrying few…
Posted inOrgans
Layers of the Gastrointestinal Tract
The gastrointestinal tract shares four concentric layers from esophagus to rectum: innermost mucosa with epithelium, lamina propria, muscularis mucosae; submucosa dense connective with glands, vessels, Meissner plexus; muscularis propria inner…
Posted inMuscles
Action Potential Heart Contraction
A heart physiology illustration linking action potentials to contraction demonstrates how electrical signals drive each heartbeat. It traces the spread of an action potential through cardiac muscle cells, beginning with…
Posted inMedical
Embryo Week 3
Embryo week 3 is a pivotal period of gastrulation where the primitive streak appears on the epiblast, cells ingress to form mesoderm and definitive endoderm, displacing hypoblast, while the notochord…
Posted inOrgans
Cardiac ConductionN
A cardiac conduction diagram maps the hearts electrical system from the sinoatrial node through the atrioventricular node and into the ventricles. It shows how timing and coordination ensure efficient contraction.…
Posted inMedical
DeglutitionN
Deglutition, more commonly known as swallowing, is a remarkably coordinated process that moves food or liquid from the mouth to the stomach in three distinct phases while protecting the airway…
