The inner surface of the concha is covered by a mucous membrane that contains large vascular spaces that can change in size in order to control the width of the nasal cavity. Unlike most organ systems, the sexes of differentiated species often The mediastinum is an area found in the midline of the thoracic cavity, that is surrounded by the left and right pleural sacs.It is divided into the superior and inferior mediastinum, of which the latter is larger.. The sympathetic Angles. The inferior nasal concha is the longest and broadest of the three conchae.Unlike the superior and middle, the inferior nasal concha is formed by an independent bone (of the same name). The perineum in humans is the space between the anus and scrotum in the male, or between the anus and the vulva in the female. The ileum terminates at the ileal orifice (ileocecal junction) where the cecum of the large intestine begins.. At the ileocecal junction, the lamina muscularis of the ileum protrudes into the lumen The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates.The abdomen is the front part of the abdominal segment of the torso.The area occupied by the abdomen is called the abdominal cavity.In arthropods it is the posterior tagma of the body; it follows the thorax or The brachial plexus is a network of nerves formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit.It supplies afferent and efferent nerve fibers to the chest, shoulder, arm, forearm, and hand. Coracobrachialis is the most medial muscle in the anterior compartment of the arm.Its attachments at the coracoid process of the scapula and the anterior surface of the shaft of humerus make coracobrachialis a strong adductor of the arm. The origin of the sympathetic nervous system is found within the thoracic and lumbar segments of the spinal cord also known as the thoracolumbar division (T1 to L2,3).. The iliac fossa is limited superiorly by the iliac crest and anteriorly by the anterior border of the ilium. Definition: The infratemporal fossa is an irregular space at the lateral aspect of the skull, situated inferior to the temporal fossa and deep to the ramus of the mandible. cerebral fossa any of the depressions on the floor of the cranial cavity. It is rectangle-shaped and thus has two surfaces and four borders. The perineum is the region of the body between the pubic symphysis (pubic arch) and the coccyx (tail bone), including the perineal body and surrounding structures. Structure. Frontal sinuses are rarely symmetrical and the septum between them frequently deviates to one or other side of the middle line. Operative Neurosurgery is the resource for cutting-edge material on operative practice. The mucous membrane in this sinus is innervated by the supraorbital nerve, which carries the postganglionic parasympathetic nerve It is present in most vertebrates, excluding bony fish and most snakes. It then goes through the petrous bone of the skull base (petrous segment), and turns up within the foramen lacerum, existing the bone. They are lightweight yet strong A fossa, in anatomical terms, is from the Latin word meaning small ditch or groove.The numerous muscles and tendons that surround the muscles, as well In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated. A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. There is some variability in how the boundaries are defined. fossa [fosah] (pl. Structure. Neurosurgery, the official journal of the CNS, publishes top research on clinical and experimental neurosurgery covering the latest developments in science, technology, and medicine.The journal attracts contributions from the most respected authorities in the field. Antecubital Fossa Definition. Editor/authors are masked to the peer review process and editorial decision-making of their own work and are not able to access this work "Orbit" can refer to the bony socket, or it can also be used to imply the contents. : 708709 Adjacent to the hamate on the ulnar side, and slightly above it, is the pisiform bone.Adjacent on the radial side is the capitate, and proximal is the lunate bone. It arises from the incisive fossa of mandible and descends inferiorly to insert on the skin of the chin at the level of the mentolabial sulcus of the mandible. Bone anatomy. AJOG's Editors have active research programs and, on occasion, publish work in the Journal. It is composed of central and peripheral portions. There are several organs and other components involved in the digestion of food. Bones and joints. Surfaces. Operative Neurosurgery features operative procedures, anatomy, instrumentation, devices, and technology providing practical guidance to its readers. Borders: Anterior wall: Posterior and infratemporal surface of the maxilla Posterior wall: Tympanic plate, mastoid and styloid processes of the temporal bone. This is unique since no other It receives its innervation from the Sympathetic nervous system (diagram) The sympathetic nervous system is part of the autonomic nervous system, along with its counterpart, parasympathetic nervous system.. Spinal nerves are mixed nerves that transmit motor, sensory, and autonomic signals between the central nervous system and the periphery. The outer surface is concavo-convex from above downward, convex from side to side; it is covered by the procerus and nasalis muscles, and perforated about its center by a foramen, for the transmission of a small vein.. The inferior mediastinum is further divided into the anterior, middle and posterior mediastinum.Every compartment of the mediastinum contains amygdaloid fossa the depression in which the tonsil is lodged. That is, the ulna is on the same side of the forearm as the little finger. The largest structure of the digestive system is the gastrointestinal tract (GI tract). There are 12 thoracic vertebrae (denoted as T1-T12) found in adult humans, and they are situated in between the cervical and lumbar vertebrae, with a general sizing larger than the cervical but smaller than the lumbar vertebrae.For each of the 12 thoracic vertebrae, there is a corresponding pair of ribs attached to them. The two nasal bones are joined at the midline internasal suture and make up the bridge of the nose.. The femur is the only bone located within the human thigh. How to Submit. The inner surface is concave from side to side, Bones. The peripheral portion of the vestibular system consists of the vestibular labyrinth, It makes up the facial skeleton (viscerocranium) along with the zygomatic bone, maxillae, palatine bones, lacrimal bones, inferior nasal conchae, vomer and mandible.The nasal bone is located medial to the frontal processes of the maxillae. Going lateral from the ventricles, the next set of structures are the subcortical structures; thalamus and basal ganglia.. On the axial MRI brain scan, the thalamus is seen as a dark gray ovoid mass, found immediately lateral to the third ventricle and deep to the lateral ventricle. It includes a wealth of information applicable to researchers and practicing neurosurgeons. The ileum is the last and longest part of the small intestine.It is found in the lower right quadrant of the abdomen, although the terminal ileum can extend into the pelvic cavity. fossae) (L.) a trench or channel; in anatomy, a hollow or depressed area. It forms the radial border of the carpal tunnel.The scaphoid bone is the largest bone of the proximal row of wrist bones, its long axis being from above downward, lateralward, and forward. Structure. It is both the longest and the strongest bone in the human body, extending from the hip to the knee. The antecubital fossa, or simply elbow pit, is the small triangular depression in the arm which is formed by the connection of the humerus with the radius and ulna of the forearm. Read Instructions for Authors. The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction.Many non-living substances such as fluids, hormones, and pheromones are also important accessories to the reproductive system. ulnae or ulnas) is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm. The superior angle is located at the approximate level of the second thoracic vertebra.The superior angle of the scapula is thin, smooth, rounded, and inclined somewhat condylar fossa (condyloid fossa) either of two pits on the lateral portion of the occipital bone. It forms the posterolateral wall of the greater (false) pelvis.. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility.Bones come in a variety of shapes and sizes and have a complex internal and external structure. The occipital bone (/ k s p t l /) is a cranial dermal bone and the main bone of the occiput (back and lower part of the skull).It is trapezoidal in shape and curved on itself like a shallow dish. A medial border, located posteriorly, separates the iliac fossa from This starts at the mouth and ends Vestibular system anatomy The vestibular system is a somatosensory portion of the nervous system that provides us with the awareness of the spatial position of our head and body (proprioception) and self-motion (kinesthesia).). The organs known as the accessory digestive organs are the liver, gall bladder and pancreas.Other components include the mouth, salivary glands, tongue, teeth and epiglottis.. is a variety of causes for facial nerve paralysis including inflammation (e.g. Each spinal nerve carries afferent (sensory) fibers and efferent (motor) fibers to and from the spinal cord, the former of which comprise the posterior/dorsal roots.Each posterior root presents a ganglion as it emerges from Additionally, this muscle is also a weak flexor of the arm at the shoulder joint. Their average measurements are as follows: height 28 mm, breadth 24 mm, depth 20 mm, creating a space of 6-7 ml. The ICA in the neck (cervical ICA) extends from carotid bifurcation to skull base. The scaphoid bone is one of the carpal bones of the wrist.It is situated between the hand and forearm on the thumb side of the wrist (also called the lateral or radial side). Pronation and supination are movements that occur at the proximal radioulnar joint.The head of the radius is discoid and fits with the radial neck within the circular annular ligament, that attaches the proximal radius to the ulna.The wheel like rotation of the head of the radius enables supination (palm facing upwards), and pronation (palm facing Heinrich Wilhelm Gottfried von Waldeyer-Hartz first described the incomplete ring of lymphoid tissue, situated in the naso-oropharynx, in 1884.The ring acts as a first line of defence against microbes that enters the body via the nasal and oral routes.. Waldeyers ring consists of four tonsillar structures (namely, the pharyngeal, tubal, palatine and lingual tonsils) as well as In the adult human, the volume of the orbit is 30 millilitres (1.06 imp fl oz; 1.01 US fl oz), of which the eye occupies 6.5 ml (0.23 imp fl oz; 0.22 US fl oz). Each phalanx consists of a central part, called the body, (asymmetric towards the radial side), an ungual fossa, and a pair of unequal ungual spines (the ulnar being more prominent). There are three cuneiform bones: The medial cuneiform (also known as first cuneiform) is the largest of the cuneiforms.It is situated at the medial side of the foot, anterior to the navicular bone and posterior to the base of the first metatarsal.Lateral to it is the intermediate cuneiform.It articulates with four bones: the navicular, second cuneiform, and first and second The ulna (pl. The hamate is an irregularly shaped carpal bone found within the hand.The hamate is found within the distal row of carpal bones, and abuts the metacarpals of the little finger and ring finger. There are 3 angles: The superior angle of the scapula or medial angle, is covered by the trapezius muscle.This angle is formed by the junction of the superior and medial borders of the scapula. The perineal raphe is The ilium is the largest of three bones that fuse together over time to comprise the outer sections of the pelvis. The mandible is the largest bone of the fascial skeleton (viscerocranium).Besides the bones of the middle ear, the mandible is the only mobile bone in the skull.Unlike other bones of the skull, the mandible doesnt articulate with the surrounding bones via sutures, but rather via a synovial joint called the temporomandibular joint.This joint allows the mandible to be Oral Surgery, Oral Medicine, Oral Pathology Oral Radiology is required reading for practitioners in the fields of oral surgery, oral medicine, oral pathology, oral radiology or advanced general practice dentistry.It is the only major dental journal that provides a practical and complete overview of the medical and surgical techniques of dental practice in four areas. The caudate nucleus is an elongated C-shaped nucleus that consists of the head, The Iliac fossa is a large depression on the anteromedial aspect of the flat, fan-shaped upper part (ala or wing) of the iliac bone (ilium). The nasal bone is a small, flat bone of the skull.