Neck
Description: two-headed muscle on anterolateral surface of neck, prominent landmark and fleshy mass which borders delineates anterior and posterior triangles...
- Knowledge Base
- Category 1
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External Carotid Artery
The external carotid artery is a major artery of the head and neck Arises at the bifurcation of the common... -
Liver
The liver is a wedge-shaped peritoneal organ located predominantly in the right upper quadrant (right hypochondrium and epigastric) of the... -
Stomach
The stomach is a J-shaped intraperitoneal organ of the upper gastrointestinal tract, predominantly located in the epigastric and umbilical abdominal... -
Ductus Deferens
Urinary Bladder and UrethraPelvic -
Mandible
Summary -
Nasolacrimal Apparatus
SummaryThe Orbit -
Optic Nerve Complex
SummaryThe Orbit -
Basal Ganglia (Grey matter nuclei)
Caudate nucleus, Putamen, Globus pallidus, AmygdalaGrey Matter Nuclei -
Cerebral cortex
Frontal, temporal, parietal, occipital lobes, HippocampusBrain -
Basal CSF Cisterns
Suprasellar, Interpeduncular, Ambient, Qaudrigeminal, Prepontine, Cerebellopontine, Premedullary cisternsBrain -
Pituitary & Related Structures
Sella Turcica, Cavernous Sinus, Pituitary Gland, Neurohypophysis, AdenohypophysisBrain -
Cerebellum
Suprasellar, Interpeduncular, Ambient, Qaudrigeminal, Prepontine, Cerebellopontine, Premedullary cisternsBrain -
Internal Carotid Artery
Internal Carotid Artery, Branches & SegmentsBrain -
Basilar Artery
Basilar & VertebralBrain -
Circle of Willis
Circle of Willis, Configuration & VariationsCentral Nervous System -
Optic Nerve
Optic NerveBrain -
Pancreas
PancreasAbdomen -
Duodenum
DuodenumAbdomen -
Azygous & Hemiazygous Vein
Azygous, Hemiazygous, Accessory Hemiazygous VeinThorax -
Inferior Vena Cava
Inferior Vena Cava (IVC)Abdomen -
Rectum
Rectum & Anal CanalPelvic -
Urinary Bladder
Urinary Bladder and UrethraPelvic -
Axilla
AxillaAnterior region -
Internal Auditory Meatus
Posterior cranial fossa, facial nerve, vestibulocochlear nerve, vestibular ganglion, labyrinthine arteryIntracranial Cavity -
Gallbladder
A distensible pear-shaped musclomebranous sac which stores and concentrates bile between meals. Gallbladder fossa on the visceral surface of the... -
Uterus
A pear-shaped, thick-walled, muscular secondary sex organ in the midline of the female pelvis, responsible for the transportation and maintenance... -
Internal Jugular Vein
A major vein returning deoxygenated blood from the brain, upper face and neck Formed by the union of inferior petrosal... -
Sacrum
Large, thick bone with an inverted triangular shape located at the terminal vertebral canal, forming the posterior aspect of the... -
Thyroid Gland
A butterfly-shaped endocrine gland in the the visceral compartment of the anterior neck, spanning the C5 – T1 vertebrae and... -
Portal Vein
The portal vein supplies the liver with nutrient-rich blood (also containing toxins extracted from digested contents) drained from the gastrointestinal... -
Hyoid Bone
A horseshoe-shaped bone in the anterior midline of the neck at the C3 vertebral level (the same level of the... -
Corpus Callosum
Large, wide, flat C-shaped white matter tract connecting the left and right cerebral hemispheres. It forms the floor of the... -
Accessory Nerve
The accessory nerve is the eleventh cranial nerve and has virtually only somatic motor function, innervating the sternocleidomastoid and trapezius... -
Middle Cerebral Artery
One of the three major paired arteries that supply blood the brain. [foogallery id=”7185″] M1 – sphenoidal or horizontal segment... -
Cavernous Sinus
The cavernous sinus is a paired dural venous sinus, located bilaterally to the sella turcica and body of the sphenoid... -
Ophthalmic Artery
The ophthalmic artery is typically the first major intracranial branch of the internal carotid artery. It arises just as the... -
Glossopharyngeal Nerve
The glossopharyngeal nerve is the ninth paired cranial nerve (CN IX). It is one of the four cranial nerves that... -
Ovary
The ovaries are paired, ovoid-shaped intraperitoneal endocrine organs, found in the lower left and right abdominal quadrants. They function as... -
Ethmoid Bone
The ethmoid bone is one of the 8 bones of the cranium. It is a small unpaired cuboidal bone with... -
Thoracic Duct
The thoracic duct is the main and largest lymphatic vessel for the return of chyle/lymph to the systemic venous system.... -
Middle Ear
The middle ear (tympanic cavity or tympanum) is an air-filled box-shaped chamber with concave sides in the petrous part of... -
Temporal Bone
The temporal bones are paired, dense, irregularly-shaped complex bones that comprise the lateral base of the skull. It contains the... -
Jugular Foramen
A large foramen in the medial-inferior surface of the petrous pyramid of the temporal bone at the base of the... -
Testes & Epididymis
The testes are paired ellipsoid-shaped male sex glands located within the scrotum which have endocrine and exocrine functions. They are... -
Inguinal Canal
The inguinal canal is a short oblique passage in the inferior aspect of the anterior abdominal wall that transmits structures... -
Prostate
The prostate is a firm, inverted-pyramid-shaped walnut-sized fibromuscular accessory gland in the male reproductive system that surrounds the prostatic urethra... -
Lumbar Plexus
The lumbar plexus is a network of nerve fibres arising from the lumbar spinal cord, which supplies the skin and... -
Popliteal Fossa
The popliteal fossa is a diamond-shaped shallow depression located posterior to the knee joint that allows dynamic movement of neurovascular... -
Retroperitoneum
The retroperitoneum is an anatomical space located posterior to the peritoneal cavity where abdominal organs that are not suspended by... -
Male Urethra
The male urethra is a 20 cm fibromuscular tube connecting the urinary bladder with the external urethral meatus. It contains... -
Hip Joint
The hip joint is a ball and socket synovial joint, formed by the articulation of the femoral head with the... -
Internal Iliac Artery
The internal iliac artery (less commonly known as the hypogastric artery) is the smaller terminal branch of the common iliac artery. It supplies... -
Thymus
The thymus gland is an asymmetrical, flat, bi-lobed lymphoid organ located posterior to the manubrium in the superior mediastinum. In... -
Venous Drainage of the Lower Limb
The veins of the lower limb drain deoxygenated blood and return it to the heart. They can be divided into... -
Internal Pudendal Artery
The internal pudendal artery is one of the three pudendal arteries supplying the muscles and organs of the pelvic cavity.... -
Adrenal Gland
The adrenal (suprarenal) glands are paired endocrine glands situated over the medial aspect of the superior poles of each kidney... -
Atlanto-Occipital Joint
The atlantooccipital joints (less commonly known as the C0-C1 joint) are a symmetrical condyloid synovial joint between the occipital bone... -
Phrenic Nerve
The phrenic nerve is a bilateral, mixed nerve that originates from the cervical nerves in the neck and descends through... -
Lymphatic Drainage of the Breast
Lymphatic drainage of breast is the primary route for metastatic dissemination of adenocarcinoma. The breast lymphatics are diffuse and variable,... -
Humerus
The humerus is a long bone of the upper limb, extending from the shoulder to the elbow. Proximal Head –... -
Ankle (Talocrural) Joint
The ankle (talocrural) joint is a synovial hinge joint located in the lower limb, formed by the tibia, fibula and... -
Femur
The femur is the longest, heaviest and strongest bone in the body, and the only long bone in the thigh,... -
Knee Menisci
The knee menisci are two crescenteric fibrocartilaginous pads with a triangular cross-section that sits within medial and lateral aspects of... -
Femoral Vein
The femoral vein is a large vein located deep within the thigh and is responsible for draining the lower limb.... -
Anterior Tibial Artery
Arises from the popliteal artery in the popliteal fossa, at the distal border of the popliteus muscle. Proximally in its... -
Femoral Nerve
The femoral nerve is one of the major peripheral nerves of the lower limb and the largest nerve of the lumbar... -
Inguinal Lymphatics
The inguinal lymph node can be subdivided into the superficial and deep lymph nodes and collectively drains the anal canal... -
Vagina
The vagina is a distensible fibromuscular tube of the female reproductive tract, which extends posterosuperiorly from the external vaginal orifice to... -
Penis
The penis is an external organ of the male reproductive system, located within the urogenital triangle between the perineal membrane... -
Kidney
The kidneys are paired bean-shaped retroperitoneal organs located in the upper left and right abdominal quadrants, extending from T12 to... -
Ureter
Paired 25 cm long muscular tubular structures that conduct urine from the renal pelvis to the urinary bladder Pelvouretric junction... -
Heart
The heart is a fist-sized retrosternal muscular organ found in the middle mediastinum and is composed of four chambers which... -
Biliary Tree
Series of coalescing ducts conducting bile from the hepatic parenchyma to the duodenum with some bile stored in the gallbladder... -
External Iliac Artery
The external iliac artery is the larger terminal branch of the common iliac artery. The common iliac artery bifurcates into... -
Spermatic Cord
A tubular structure suspending the testes and epididymis in the scrotum, and conveying neurovascular and reproductive structures to it. Formed... -
Inferior Mesenteric Artery
Branch of the abdominal aorta supplying structures derived from embryological hindgut, i.e. the distal third of the transverse colon, splenic... -
Spleen
The spleen is a highly vascular, fist-sized solid lymphoid organ (the largest in the body), located in the left hypochondriac... -
Anal Canal
The anal canal is the distal continuation of the rectum and terminal segment of the gastointestinal tract. It is located... -
Popliteal Artery
The popliteal artery is a continuation of the superficial femoral artery as it exits the adductuor hiatus and enters the... -
Abducens Nerve
The abducens nerve is cranial nerve six (CN VI) responsible for the motor innervation of the lateral rectus muscle. Arises... -
Fornix
The fornix is a C-shaped outflow bundle of white matter, originating from the hippocampus in the mesial temporal lobe and... -
Fourth Ventricle
The ventricules of the brain produces and transmits cerebrospinal fluid into the ventricular system, subarachnoid space and spinal canal. The... -
Pharyngeal Muscles
The pharynx is a muscular tube that connects the nasal and oral cavity to the larynx and oesophagus. Three overlapping... -
Atlas (C1)
The atlas (C1) is the first cervical vertebra, consider an atypical vertebra. Consists of paired lateral masses joined by anterior... -
Sphenoid Bone
The sphenoid bone is an unpaired butterfly-shaped bone which comprises part of the anterior midline of the cranium, contributing to... -
Scalene Muscles
The scalene muscles are three paired muscles (anterior, middle and posterior), located in the deep lateral aspect of the neck... -
Muscles of the Anterior Compartment of the Arm
There are three muscles located in the anterior compartment of the upper arm – biceps brachii, coracobrachialis and brachialis. Biceps... -
Scaphoid
A boat-shaped bone, oriented oblique with its long axis aligned form the medial portion of hte distal radius. It is... -
Clavicle
The clavicle is a sigmoid-shaped long bone extending between the manubrium of the sternum and the acromion process of the... -
Distal Radioulnar Joint
The distal radioulnar joint is a synovial pivot joint located proximal to the wrist joint. Articular surface of the ulnar... -
Musculocutaenous Nerve
A major peripheral nerve of the anterior compartment of the arm A terminal branch of the lateral cord of the... -
Muscles of the Posterior Compartment of the Arm
The posterior compartment of the arm is one of the two compartments in the arm. The brachial fascia (sheath of deep... -
Muscles of the Posterior Compartment of the Forearm
The muscles in the posterior compartment of the forearm are commonly known as the extensor muscles, generally functioning to extend... -
Ulna
The ulnar is a long bone in the medial aspect of the forearm. It acts as the stabilising bone. Proximal... -
Superior Vena Cava (SVC)
The superior vena cava is a large, valveless vein that returns venous blood from the upper body (above diaphragm, except... -
1st Rib
The first rib is the most superior of the twelve ribs and one of three atypical ribs (the others: eleventh... -
Venous Drainage of the Thorax
The venous drainage of the thoracic wall drains deoxygenated venous blood from the periphery of the thoracic cage back into... -
Fasciae of the Neck
Fascia is an internal connective tissue which forms bands or sheets that surround and support muscles, vessels and nerves in... -
Lumbosacral Joint
The lumbosacral joint is a set of two articulations between the fifth lumbar (L5) and first sacral (S1) vertebrae. The...