diagram – Anatomy System – Human Body Anatomy diagram and chart images

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 Erbs point with other cutaneous cervical branches.

Medical

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.

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Borders of the Femoral Canal Diagram

Femoral canal boundaries: anterior inguinal ligament, posterior pectineal ligament, medial lacunar ligament, lateral femoral vein. Its the medial compartment of femoral sheath, site of femoral hernias (often Richters type).

Muscles

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.

Muscles

Deep Chest Muscles Serratus Anterior and Pectoralis Minor Diagram

Deep anterior chest muscles include serratus anterior (from ribs 1-8/9 to scapula medial border, protracts/rotates scapula) and pectoralis minor (ribs 3-5 to coracoid, depresses scapula, accessory respiration). Both stabilize shoulder…

Organs

Anatomical Divisions of the Small Intestines Duodenum Jejunum and Ileum Diagram

Small intestine divisions: duodenum (C-shaped, retroperitoneal, receives bile/pancreatic juice), jejunum (proximal 2/5, longer vasa recta, taller plicae), ileum (distal 3/5, more arcades, Peyers patches). They absorb nutrients progressively.

Medical

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 markedsuperior, inferior, medial, lateralwhile…

Muscles

Phrenic Nerve Motor Innervation to the Diaphragm Diagram

The phrenic nerve (C3-C5) provides sole motor innervation to diaphragm (plus sensory to pericardium/pleura). It descends on scalenus anterior, through thorax along pericardium to central tendon, ensuring breathing despite cervical…

Organs

The Aortic Valve Sinuses and Coronary Arteries Diagram

The aortic valve sinuses (of Valsalva) form three pocket-like dilations just above the aortic valve cusps. The right sinus gives origin to the right coronary artery, the left sinus to…

Medical

Somites Adjacent to the Neural Tube Diagram

In the Somites Adjacent to the Neural Tube diagram you watch early embryonic blocks of tissue lined up along the developing spinal cord. These somites will eventually give rise to…

Medical

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.

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Course of the Superior Epigastric Artery Diagram

The superior epigastric artery (from internal thoracic) descends in rectus sheath, anastomoses with inferior epigastric, supplying rectus abdominis and anterior abdominal wall. It forms part of Hesselbachs triangle boundary.

Organs

Overview of the Cerebrum Diagram

The cerebrum overview shows two hemispheres divided by longitudinal fissure, with frontal (planning, motor), parietal (sensory, spatial), temporal (auditory, memory), occipital (visual) lobes, plus insula deep in lateral sulcus and…

Medical

The Superficial Veins of the Upper Limb Cephalic and Basilic Veins Diagram

Superficial upper limb veins: cephalic (lateral, thumb to deltoid/axillary), basilic (medial, little finger to axillary), median cubital (connects cephalic/basilic at elbow). Theyre common IV sites.

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Layers of the Thoracolumbar Fascia Diagram

Thoracolumbar fascia layers: anterior (psoas/quadratus lumborum), middle (between erector spinae/quadratus), posterior (covering erector spinae). They enclose paraspinal muscles, provide attachment for obliques/transversus.

Muscles

Hip Add Abd Diagram

The Hip Add Abd diagram (likely adduction/abduction) illustrates hip movements: adductors (magnus, longus, brevis, gracilis, pectineus) pulling the thigh medially, abductors (gluteus medius/minimus, tensor fasciae latae) moving it laterally. It…

Organs

Medullary Pyramids Diagram

This Medullary Pyramids diagram (likely brainstem) depicts the ventral medulla oblongata with its paired pyramidal tractscorticospinal fibers descending to decussate at the pyramid level before continuing into the spinal cord…

Organs

Parts of the Parietal Pleura Diagram

Parts of parietal pleura: costal (chest wall), diaphragmatic (diaphragm), mediastinal (mediastinum), cervical (apex above first rib). Reflections form recesses (costodiaphragmatic deepest); fluid accumulates there in effusion.

Muscles

Palmar View of the Thenar Muscles of the Thumb and Hand Labelled TeachMeAnatomy Diagram

Palmar view of thenar muscles shows abductor pollicis brevis (superficial), flexor pollicis brevis (superficial/deep heads), opponens pollicis (deep to abductor), all from flexor retinaculum/scaphoid/trapezium to thumb proximal phalanx/first metacarpal. Median…

Medical

Cutaneous Innervation to the Upper Limb Diagram

Cutaneous innervation of the upper limb includes dermatomes from C5-T1: axillary (regimental badge), musculocutaneous (lateral forearm), median (palm/thumb-index-middle), ulnar (little/ring), radial (dorsal hand). Overlap helps in nerve lesion mapping.