Items tagged “anatomy rewrite”
64 results found
Article
Accessory sutures
The parietal and occipital bones in particular are common regions for accessory sutures because of their multiple ossification centers.
It is important to know these anatomic variations, mainly on the head trauma image studies in children, where it could be difficult to differentiate non-depres...
Article
Lung
The lungs are the functional units of respiration and are key to survival. They contain 1500 miles of airways, 300-500 million alveoli and have a combined surface area of 70 square meters (half a tennis court). Each lung weighs approximately 1.1 kg. They are affected by a wide range of pathology...
Article
Bronchopulmonary segmental anatomy
Bronchopulmonary segmental anatomy describes the division of the lungs into segments based on the tertiary or segmental bronchi.
Gross anatomy
The trachea divides at the carina forming the left and right main stem bronchi which enter the lung substance to divide further. This initial division ...
Article
Pleura
The pleura (plural: pleurae) is an exceedingly delicate serous membrane which is arranged in the form of a closed invaginated sac that encloses the lungs and lines the thoracic cavity.
Gross anatomy
The pleura divides into:
visceral pleura which covers the surface of the lung and dips into th...
Article
Mediastinum
The mediastinum is a space in the thorax that contains a group of organs, vessels, nerves, lymphatics and their surrounding connective tissue. It lies in the midline of the chest between the pleura of each lung and extends anterior to posterior from the sternum to the vertebral column and superi...
Article
Nipple-areolar complex
During the 6th week of gestation, a pair of longitudinal thickening of the epidermis develop on the ventral surface of the embryo, extending from the axilla to the medial thigh, called "mammary ridges" (or "mammary line", “milk lines"). In large part these milk lines later atrophy, leaving only...
Article
Arterial supply of the lower limb
The arterial supply of the lower limbs originates from the external iliac artery.
The common femoral artery is the direct continuation of the external iliac artery, beginning at the level of the inguinal ligament. The common femoral artery becomes the superficial femoral artery at the point wh...
Article
Circumaortic left renal vein
Circumaortic left renal vein, also known as circumaortic renal collar is an anomaly of left renal vein when a supernumerary or accessory left renal vein passes posterior to the aorta, apart from the normal renal vein passing anterior to the aorta. This anomaly is potentially hazardous, if unreco...
Article
Descending aorta
The descending aorta is the continuation of the aortic arch in the posterior mediastinum.
Gross anatomy
The descending aorta commences at the level of the fourth thoracic vertebra body, on its left, in the plane of Ludwig as the continuation of the aortic arch. It descends in the posterior med...
Article
Accessory peroneal muscles
Accessory peroneal muscles are a group of accessory muscles that can occur in the foot region as a normal variant in some individuals. The peroneal compartment is known as the lateral compartment of the leg.
Peroneus quartus muscle
Originally, several accessory muscles were distinguished in th...
Article
Internal jugular vein
The internal jugular vein (IJV) is the major venous return from the brain, upper face and neck.
Gross anatomy
Origin and course
It is formed by the union of inferior petrosal and sigmoid dural venous sinuses in or just distal to the jugular foramen (forming the jugular bulb). It descends in t...
Article
Rectus sheath
The rectus sheath encloses the rectus abdominis and pyramidalis muscles and forms an important component of the anterior abdominal wall.
Gross anatomy
The rectus sheath is composed of the aponeuroses of transversus abdominis, external oblique and internal oblique muscles, which form anterior a...
Article
Subclavian artery
The subclavian arteries are asymmetric paired arteries that supply blood to the posterior cerebrum, cerebellum, posterior neck, upper limbs and the superior and anterior chest wall.
Gross anatomy
Origin
Right and left subclavian arteries classically have different origins:
right subclavian a...
Article
Aberrant arachnoid granulations
Aberrant arachnoid granulations, also known as arachnoid pits, are arachnoid granulations that penetrated the dura but failed to migrate normally in the venous sinus. They are most often located in the greater wing of the sphenoid bone and may be seen in idiopathic intracranial hypertension. Occ...
Article
Meandering main pancreatic duct
Meandering main pancreatic duct (MMPD) denotes a main pancreatic duct that drains normally into the major papilla but performs a hairpin turn (reverse Z-type) or loop (loop-type) in the pancreatic head, in contradistinction to the smooth curvature seen in most cases.
These ductal variants are f...
Article
Ansa pancreatica
Ansa pancreatica is a rare type of anatomical variation of the pancreatic duct. It is a communication between the main pancreatic duct (of Wirsung) and the accessory pancreatic duct (of Santorini). Ansa pancreatica has been considered as a predisposing factor in patients with idiopathic acute pa...
Article
Cerebral veins
The cerebral veins drain the brain parenchyma and are located in the subarachnoid space. They pierce the meninges and drain further into the cranial venous sinuses.
The cerebral veins lack muscular tissue and valves. The cerebral venous system can be divided into:
superficial (cortical) cerebr...
Article
Petrous part of temporal bone
The petrous part of the temporal bone, also known as the petrous temporal bone (PTB), forms the part of skull base between the sphenoid and occipital bones.
Gross anatomy
The petrous temporal bone has a pyramidal shape with an apex and a base as well as three surfaces and angles:
apex (petro...
Article
Coronary sinus
The coronary sinus is the largest cardiac venous structure. It returns the majority of the blood supply for the left ventricle to the right atrium.
Gross anatomy
The coronary sinus courses along the posterior wall of the left atrium into the left atrioventricular groove. It normally drains int...
Article
Petrosquamous fissure
The petrosquamous fissure is the obliquely oriented fissure between the medial petrous part and lateral squamous part of the temporal bone.
Gross anatomy
The anterior (ventral) petrosquamous fissure is the medial continuation of the tympanosquamous fissure and petrotympanic fissure (together f...
Unable to process the form. Check for errors and try again.