Articles
Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.
3,363 results found
Article
Gracilis muscle
The gracilis muscle is the most superficial muscle in the medial compartment of the thigh and descends almost vertically down the medial side of the thigh.
Summary
origin: a line on the external surfaces of the body of the pubis, inferior pubic ramus, and the ramus of the ischium
insertion: a...
Article
Inferior olivary nucleus
The inferior olivary nuclei (or ION) are two C-shaped nuclei located within the medulla oblongata, implicated in motor coordination.
Gross anatomy
The inferior olivary nuclei are located in the superior medulla, just below the pons. They are an irregular mass of crenated C-shaped grey matter, ...
Article
Optic nerve
The optic nerve is the second (CN II) cranial nerve (TA: nervus opticus or nervus cranialis II). It is a purely sensory nerve that conveys visual information from the eye to the brain.
The nerve arises from the back of the globe exiting the orbit via the optic canal. It joins the contralateral...
Article
Venous circle of Trolard
The anastomotic venous circle of the base of the brain 1, also referred to as the venous circle of Trolard 2,3,5, is an inconsistently found venous homologue of the better-known arterial circle of Willis.
It should not be confused with other venous structures also described by Trolard such as t...
Article
Vagus nerve
The vagus nerve (TA: nervus vagus or nervus cranialis X), the tenth cranial nerve (CN X), exits the skull through the jugular foramen, travels down the neck within the carotid sheath, over the pericardium and into the abdomen, giving off numerous branches. It is the longest cranial nerve.
It is...
Article
Pineal gland
The pineal gland is a small unpaired pine-cone shaped endocrine organ considered to be part of the epithalamus. It is situated in the midline anterior to the quadrigeminal cistern and secrete melatonin hence regulates the circadian cycle.
Gross anatomy
The pineal gland typically measures arou...
Article
Knee menisci
The knee menisci are fibrocartilaginous structures that sit within the knee joint, deepening the tibiofemoral articulation. Their main role is shock absorption, improve stability of the knee joint, and load transmission. They also play an important role in synovial fluid dynamic circulation and ...
Article
Anatomy article structure (organ)
As with all other articles, the introductory paragraph should introduce the anatomical term and aim to give an interesting summary. The first sentence should contain the title of the article in bold.
Summary
location:
function:
blood supply and drainage:
relations:
Gross anatomy
Location...
Article
Celiac plexus
The celiac plexus (plural: plexuses) is an autonomic nerve plexus and ganglia in the upper abdomen. It is the largest major autonomic plexus.
Summary
location: the ganglion and plexus lie close to the celiac trunk
origin:
preganglionic sympathetic fibers via the greater and lesser splanchnic...
Article
Kidneys
The kidneys are paired retroperitoneal organs that lie at the level of the T12 to L3 vertebral bodies.
Gross anatomy
Location
The kidneys are located to either side of the vertebral column in the perirenal space of the retroperitoneum, within the posterior abdominal wall. The long axis of the...
Article
Metatarsal
The metatarsals consist of five long bones in the foot. They are numbered from 1st to 5th from the medial side of the foot to lateral. They are analogous to the metacarpals of the hand.
Gross anatomy
The metatarsal bones run from the tarsus, forming the tarsometatarsal joints, to the base of p...
Article
Fibula
The fibula (plural: fibulae) is the smaller of the two bones of the leg. It is not directly involved in the transmission of weight but is important for ankle stability and acts as a source for numerous muscle attachments. It is commonly raised as a flap for reconstructive surgery.
Gross anatom...
Article
Styloid (disambiguation)
Styloid is an anatomic term that refers to a thin, slender and pointed bony structure resembling a stylus or pen. Apart from the classic styloid process of the temporal bone, elsewhere the bony process is often just pointed and not very slender or long at all.
Styloid processes are described in...
Article
Glenoid (disambiguation)
Glenoid is an anatomic term that refers to a bony structure with a smooth shallow depression forming a socket as part of a joint.
Glenoids are described in the:
scapula contributing to the glenohumeral joint
temporal bone contributing to the temporomandibular joint (often termed the mandibula...
Article
Crystalline lens
The crystalline lens (or simply, the lens, plural: lenses) is in the ocular globe between the posterior chamber and the vitreous body. It is transparent and biconvex in morphology, and aids the focussing of light onto the retina.
Gross anatomy
Location
The lens lies in the globe at the poste...
Article
Suspensory ligament of the ovary
The suspensory ligament of the ovary is a thin fold of the parietal peritoneum which attaches to the lateral margin of the ovary and extends to the lateral pelvic sidewall. It is also referred to as the infundibulopelvic ligament 1,2. It should not to be confused with the ovarian ligament which ...
Article
Ovarian ligament
The ovarian ligament, ligament of the ovary, or utero-ovarian ligament is one of the supporting ligaments of the ovary and uterus within the female pelvis. It should not be confused with the suspensory ligament of the ovary, which is a separate structure that extends laterally from the ovary and...
Article
Sacrospinous ligament
The sacrospinous ligament is a stabilizer of the sacroiliac joint and connects the bony pelvis to the vertebral column.
Gross anatomy
The sacrospinous ligament is a triangular-shaped structure with its base attached to the anterior sacrum (S2-S4) and coccyx, and its apex attached to the ischi...
Article
Celiac artery
The celiac artery, also known as the celiac axis or celiac trunk, is a major splanchnic artery in the abdominal cavity supplying the foregut. It arises from the abdominal aorta and commonly gives rise to three branches: left gastric artery, splenic artery, and common hepatic artery.
Gross anat...
Article
Viscera
The viscera (singular: viscus) refers to all the internal organs within the major cavities of the thorax, abdomen and pelvis. Therefore it does not include organs of the CNS, head and neck or musculoskeletal compartments nor does it encompass non-internal organs (e.g. the skin) 1.
Splanchnology...
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