The choroid, also known as the choroidea or choroid coat, is a part of the uvea, the vascular layer of the eye. It contains connective tissues, and lies between the retina and the sclera. The human choroid is thickest at the far extreme rear of the eye, while in the outlying areas it narrows to 0.1 mm. The choroid provides oxygen and nourishment to the outer layers of the retina. Along with the ciliary body and iris, the choroid forms the uveal tract.
The lateral cricoarytenoid is an intrinsic muscle of the larynx. It attaches at the cricoid cartilage anteriorly, and at the arytenoid cartilage of the same side posteriorly. It is innervated by the recurrent laryngeal nerve. It acts to close the rima glottidis, thus closing the airway.
Bruch's membrane or lamina vitrea is the innermost layer of the choroid of the eye. It is also called the vitreous lamina or Membrane vitriae, because of its glassy microscopic appearance. It is 2–4 μm thick.
The inferior gluteal veins are venae comitantes of the inferior gluteal artery. They commence in the superior/proximal posterior thigh. They enter the pelvis through the lower part of the greater sciatic foramen. They converge to form a single vessel before emptying into the into the distal portion of the internal iliac vein.
The tuber cinereum is the portion of hypothalamus forming the floor of the third ventricle situated between the situated between the optic chiasm, and the mammillary bodies. The tuberal region one of the three regions of the hypothalamus.
The anterior tympanic artery is a branch of the maxillary artery. It passes through the petrotympanic fissure to entre the middle ear where it contributes to the formation of the circular anastomosis around the tympanic membrane. It provides artieral supply to part of the lining of the middle ear. It is accompanied by the chorda tympani nerve.
The posterior meningeal artery is one of the meningeal branches of the ascending pharyngeal artery. It passes through the jugular foramen to enter the posterior cranial fossa. It is the largest vessel supplying the dura of the posterior cranial fossa.
The posterior ethmoidal artery is an artery of the head which arises from the ophthalmic artery to supply the posterior ethmoidal air cells, and the meninges. It is smaller than the anterior ethmoidal artery.
The tunica vaginalis is a pouch of serous membrane within the scrotum that lines the testis and epididymis, and the inner surface of the scrotum. It is the outermost of the three layers that constitute the capsule of the testis, with the tunica albuginea of penis situated beneath it.
The posterior interosseous recurrent artery branches off the posterior interosseous artery near its origin. It ascends between the lateral epicondyle and olecranon, beneath the anconeus, upon or through the substance of the supinator muscle. It anastomoses with the middle collateral artery, posterior ulnar recurrent artery, and ulnar collateral artery. The artery is sometimes absent.
The short posterior ciliary arteries are a number of branches of the ophthalmic artery. They pass forward with the optic nerve to reach the eyeball, piercing the sclera around the entry of the optic nerve into the eyeball.
The tectorial membrane of atlanto-axial joint is a tough membrane/broad, strong band representing the superior-ward prolongation of the posterior longitudinal ligament.
The tunica vasculosa testis is the inner-most of the three layers that form the capsule of the testis. It consists of a vascular plexus and loose connective tissue. It extends into the testis itself to line the surfaces of individual septa of testis.
The submental artery is the largest branch of the facial artery in the neck. It first runs forward under the mouth, then turns upward upon reaching the chin.
The suprachoroid or suprachoroid lamina is a thin membrane forming part of the choroid of the eye. It lines the external surface of the choroid. It is composed of delicate non-vascular lamellae. The long and short ciliary nerves and the long posterior ciliary arteries pass anterior-ward within the suprachoroid lamina.
The artery to the ductus deferens is an artery in males that provides blood to the ductus deferens.
The dorsal pancreatic artery is a branch of the splenic artery. It anastomoses with the superior pancreaticoduodenal artery and continues as the inferior pancreatic artery on its lower border.
The ethmoidal infundibulum is a funnel-shaped/slit-like/curved opening/passage/space/cleft upon the anterosuperior portion of the middle nasal meatus at the hiatus semilunaris. The anterior ethmoidal air cells, and (usually) the frontonasal duct open into the ethmoidal infundibulum. The ethmoidal infundibulum extends anterosuperiorly from its opening into the nasal cavity.
The superior phrenic artery is a bilaterally paired artery of the thoracic cavity. The two arteries provide arterial supply to the superior surface of the diaphragm. Each artery typically arises from either the descending part of the thoracic aorta or the 10th intercostal artery. They are distributed to the posterior part of the superior surface of the diaphragm. They form anastomoses with the musculophrenic arteries, and pericardiacophrenic arteries.
The inferior tympanic artery is a small branch of the ascending pharyngeal artery which passes through the tympanic canaliculus alongside the tympanic branch of glossopharyngeal nerve to reach and provide arterial supply to the medial wall of the tympanic cavity where it forms anastomoses with the other tympanic arteries.
