Automatic Innervation
Posted inMedical

Automatic Innervation

A nervous system diagram of automatic innervation focuses on the autonomic pathways controlling involuntary actions. Sympathetic and parasympathetic branches are labeled, along with target organs like the heart and digestive…
Overview of the Tibia Diagram
Posted inBones

Overview of the Tibia Diagram

The tibia is the main weight-bearing leg bone with proximal condyles (medial/lateral) for knee joint, tibial tuberosity for patellar ligament, anterior border (shin), interosseous border laterally, and distal medial malleolus.…
Muscles of the Posterior Thigh. Diagram
Posted inMuscles

Muscles of the Posterior Thigh Diagram

This Muscles of the Posterior Thigh diagram showcases the hamstring group—biceps femoris (long and short heads), semitendinosus, and semimembranosus—originating from the ischial tuberosity (except short head from femur) and inserting…
Depolarization in Sinus Rhythm
Posted inMedical

Depolarization in Sinus Rhythm

Depolarization in sinus rhythm refers to the orderly spread ??? of electrical impulses through the heart that drives a normal heartbeat, starting from the sinoatrial node, the natural pacemaker located…
Connective Tissue Layers of a Neurone Diagram
Posted inCell

Connective Tissue Layers of a Neurone Diagram

This Connective Tissue Layers of a Neurone diagram breaks down the protective wrapping around peripheral nerves. There’s a strong outer epineurium around the whole bundle, perineurium encasing smaller fascicles, and…
Lesser Occipital Nerve Course Diagram
Posted inMedical

Lesser Occipital Nerve Course Diagram

The lesser occipital nerve (C2 from cervical plexus) ascends posterior to ear, supplies skin behind auricle and upper neck. It emerges at Erb’s point with other cutaneous cervical branches.
Contents of the Quadrangular Space Diagram
Posted inMedical

Contents of the Quadrangular Space Diagram

Quadrangular space contents include axillary nerve and posterior circumflex humeral artery/vein, bounded by teres minor superiorly, teres major inferiorly, long head triceps medially, humerus laterally. Compression causes deltoid/teres minor weakness.
ECG Tracing with Heart ContractionN
Posted inMedical

ECG Tracing with Heart ContractionN

ECG tracing with heart contraction synchronizes electrical and mechanical events, where the P wave reflects atrial depolarization initiating contraction to fill ventricles, followed by the flat PR interval during AV…
Borders of the Femoral Canal Diagram
Posted inMedical

Borders of the Femoral Canal Diagram

Femoral canal boundaries: anterior inguinal ligament, posterior pectineal ligament, medial lacunar ligament, lateral femoral vein. It’s the medial compartment of femoral sheath, site of femoral hernias (often Richter’s type).
Large Medium Vein Venule
Posted inMedical

Large Medium Vein Venule

Veins progress from venules collecting capillary blood, merging into small then medium veins with increasing smooth muscle and valves preventing backflow in limbs against gravity, finally large veins like venae…
Muscles of the Anterolateral Abdominal Wall Diagram
Posted inMuscles

Muscles of the Anterolateral Abdominal Wall Diagram

Anterolateral abdominal wall muscles include external oblique (down/out fibers), internal oblique (up/out), transversus abdominis (horizontal), and rectus abdominis (vertical in sheath). They compress trunk, flex, rotate, and support viscera.
Borders of the Cavernous Sinus Diagram
Posted inMedical

Borders of the Cavernous Sinus Diagram

The Borders of the Cavernous Sinus diagram gives a clean cross-section view of this important dural venous space next to the pituitary. The walls are clearly marked—superior, inferior, medial, lateral—while…
Overview of the Peritoneal Abdominal Cavity Diagram
Posted inMedical

Overview of the Peritoneal Abdominal Cavity Diagram

The peritoneal abdominal cavity includes parietal peritoneum lining walls, visceral covering organs, and mesenteries/omenta suspending structures. Greater/lesser sacs, transverse mesocolon, and root of mesentery divide spaces for fluid movement.
Nerves Innervating the Urinary SystemN
Posted inOrgans

Nerves Innervating the Urinary SystemN

Nerves innervating the urinary system include sympathetic from T10-L2 inhibiting bladder contraction and promoting sphincter tone for storage, parasympathetic from S2-4 stimulating detrusor and relaxing internal sphincter for voiding, somatic…
Cardiac Muscle
Posted inMuscles

Cardiac Muscle

An illustration of cardiac muscle highlights the unique structure that allows the heart to contract continuously without fatigue. The diagram shows branched muscle fibers connected by intercalated discs, which contain…