Relations. The cervical plexus is formed by the C1 to C5 spinal nerves, giving off two branches innervating the head: lesser occipital and greater auricular nerves. ; Spinalis colli muscle originates from the same points as spinalis capitis, but also from the The azygos vein freely anastomoses with the vertebral venous plexus. The scalp consists of five layers. It is also the ; Direction: During flexion, the arm moves anteriorly and upwards (in full A branching ductal system that collects bile from the hepatic parenchyma and transports it to the duodenum constitutes the biliary tree.. Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. Four of them are found on the anterior aspect of the shoulder, whereas the rest are located on the shoulders posterior aspect and in the back. It is the preferred anatomy classification system as it divides the liver into eight independent functional units (termed segments) rather than relying on the traditional morphological description based on the FACTS. The forearm helps the shoulder and the arm in force application and the precise placement of the hand in space, with the help of the elbow and radioulnar joints.. The lumbar plexus is a network of nerves that arises from the anterior rami of spinal nerves L1-L4, along with a contribution from the anterior ramus of spinal nerve T12.It is located on the posterior abdominal wall, anterior to the transverse processes of the lumbar vertebrae and within the posterior portion of the psoas major muscle.. This part is attached to the posterior abdominal wall by the mesocolon and is therefore very flexible. pericardial veins. The fulcrum is provided by the shoulder, or glenohumeral joint, around a frontal axis. Vertebral arteries The vertebral arteries stem from the subclavian arteries; two major arteries of the thorax that lie beneath the clavicles.The vertebral arteries ascend through the neck inside the transverse foramina of the cervical vertebrae, all the way to the brain.Through their course, they give off several meningeal, muscular and spinal branches for the nearby The embryonic vitelline veins drain from the yolk sac to The empty string is the special case where the sequence has length zero, so there are no symbols in the string. Structure. Axillary artery (Arteria axillaris) The axillary artery is a large muscular vessel that travels through the axilla.It is responsible for carrying oxygen-rich blood to the upper limb, as well as to parts of the musculocutaneous system of the scapula and upper lateral thorax.. The cusps are pushed open to allow blood flow in one direction, and then closed to seal the orifices and prevent the backflow of blood. Four types of coccyx have been described:. posterior right intercostal veins. intravesical or intramural ureter: within the bladder wall. The wall-echo-shadow sign (also known as WES sign) is an ultrasonographic finding within the gallbladder fossa referring to the appearance of a "wall-echo-shadow":. Brachioradialis muscle (Musculus brachioradialis) Brachioradialis is a fusiform muscle located in the lateral part of the posterior forearm.Along with extensor carpi radialis brevis and extensor carpi radialis longus, it comprises the radial group of forearm muscles, which belong to the superficial layer of posterior forearm muscles.. Ultrasound-Guided Obturator Nerve Block. In the shoulder and arm, the brachial plexus gives rise to two nerves: the suprascapular nerve; the axillary nerve; When the brachial plexus is injured, these nerves are affected and some interesting clinical syndromes can be observed.. Arteries and veins. An irregular or elevated Z line Classification. Inguinal canal (anterior view) The intrauterine development of the testes occurs retroperitoneally, on the posterior abdominal wall. The soleus is innervated by the anterior rami of S1 and S2 spinal nerves, carried by the tibial nerve into the posterior compartment of the leg. Motor innervation of the diaphragm comes from the phrenic nerves (C3-C5).These nerves innervate the diaphragm from its abdominal surface after they penetrate it. White matter surrounds the gray matter and is made of axons. The lumbar plexus gives rise to The retroperitoneum is variably defined, mostly by the lack of consensus definition for the The Z line is a normal finding but is not seen in every study. The ambiguous nucleus This is a group of motor neurons located deep in the medullary reticular formation.Besides the glossopharyngeal nerve, this nucleus is common for the vagus nerve and the accessory nerve.. The celiac artery arises anteriorly from the abdominal aorta just below the diaphragm at the T12 level, behind the median arcuate ligament, just as the aorta enters the abdomen in between the right and left crura. S kin contains numerous Blood supply is provided by two main branches. The soleus is innervated by the anterior rami of S1 and S2 spinal nerves, carried by the tibial nerve into the posterior compartment of the leg. The lumbar plexus gives rise to It leaves the axilla and pierces the coracobrachialis muscle near its point of insertion on the humerus.. Layers of the Scalp. Blood supply to the tibialis posterior muscle is through branches of the posterior tibial artery, which stems the popliteal artery. esophageal veins. Parasympathetic nerve supply arises through three primary areas: Certain cranial nerves in the cranium, namely the preganglionic parasympathetic nerves (CN III, CN VII, CN IX and CN X) usually arise from specific nuclei in the central nervous system (CNS) and pelvic ureter: from the pelvic brim to the bladder. Course. Gross anatomy Origin. Latissimus dorsi muscle (Musculus latissimus dorsi) The latissimus dorsi muscle (AKA: 'the lats muscle' or 'the lats') is the widest muscle in the human body. Indications: Relief of painful adductor muscle contractions, to prevent adduction of the thigh during transurethral bladder surgery, additional analgesia after major knee surgery, and may provide postoperative analgesia after hamstring tendon harvest The musculocutaneous nerve is the terminal branch of the lateral cord of the brachial plexus (C5, C6 and C7) and emerges at the inferior border of pectoralis minor muscle.. Password requirements: 6 to 30 characters long; ASCII characters only (characters found on a standard US keyboard); must contain at least 4 different symbols; The erector spinae is not just one muscle, but a group of muscles and tendons which run more or less the length of the spine on the left and the right, from the sacrum, or sacral region, and hips to the base of the skull.They are also known as the sacrospinalis group of muscles. The ureter is 25-30 cm long and has three parts: abdominal ureter: from the renal pelvis to the pelvic brim. Every single structure of the arm is innervated by the brachial plexus, a network of nerves that originate from the C5-T1 spinal nerves. Anterior angulation of the coccyx may be a normal variant but poses a diagnostic challenge for those considering coccygeal trauma.. It is bounded superiorly by the xiphoid process and costal margins, posteriorly by the vertebral column and inferiorly by the pelvic bones and inguinal ligament.. hepatic artery passing posterior to the portal vein (10%) rather than anteriorly (90%) 10; There is an increased risk of bile duct hilar anatomical variation in the presence of portal vein variants. Blood supply. The distal thoracic esophagus then curves anteriorly to pass through the diaphragm into the abdominal cavity. The main artery in the shoulder is the axillary artery.This artery begins at the lateral border of the 1st rib, This article is a guide to help you master the anatomy of the forearm and the elbow joint, using the The retroperitoneum is the part of the abdominal cavity that lies between the posterior parietal peritoneum anteriorly and the posterior abdominal wall 4.. The celiac artery is typically a short vessel that It contains pathways that connect the brain with the rest of the body.. Keep learning about the white and grey matter of the spinal cord using Gracilis muscle (musculus gracilis) Gracilis muscle is a long and slender muscle located in the medial (adductor) compartment of the thigh.It forms part of the adductor muscle group together with adductor longus, adductor brevis, adductor magnus and pectineus muscles.Gracilis is the most superficial hip adductor, overlying the remaining four. The musculocutaneous nerve Sam Van Boxstael, Catherine Vandepitte, Philippe E. Gautier, and Hassanin Jalil. ; Spinalis colli muscle originates from the same points as spinalis capitis, but also from the The ureter begins its descent to the bladder by running along the medial aspect of the psoas muscle.Here, the ureter lies The mnemonic SCALP can be a useful way to remember the layers of the scalp: Skin, Dense Connective Tissue, Epicranial Aponeurosis, Loose Areolar Connective Tissue and Periosteum. Development. There are two sets of The Z line in the esophagus is the term for a faint zig-zag impression at the gastro-esophageal junction that demarcates the transition between the stratified squamous epithelium in the esophagus and the intestinal epithelium of the gastric cardia (the squamocolumnar junction).. Normally, in the 26th week of gestation, they descend into the scrotum through the inguinal canal.During descent, the testes carry their neurovascular structures and principal drainage ductsall remain placed within the spermatic Key facts about hip muscles; Iliopsoas group: Muscles: iliacus, psoas major, and psoas minor Main function: flexion of the trunk and thigh, lateral flexion of the trunk (excluding psoas major and minor only) Innervation: anterior rami of spinal nerves L1-L3 and femoral nerve (L2-L4) (iliacus only) Gluteal muscles (superficial) Muscles: gluteus maximus, gluteus medius, The superior branch arises from the popliteal artery while the inferior branch arises from peroneal artery (fibular artery) or the posterior tibial artery.The peroneal and The abdominal wall surrounds the abdominal cavity, providing it with flexible coverage and protecting the internal organs from damage. bronchial veins. Although anatomically part of the The abdominal wall can be divided into two sections: anterolateral and a curvilinear hyperechogenic line representing the gallbladder wall; a thin hypoechoic space representing a small amount of bile; a curvilinear hyperechogenic line representing the near The celiac ganglia and plexus surround the vessel at its origin.. By convention the biliary tree is divided into intra- and extra-hepatic bile ducts 1.There is significant variation in the biliary tree with the classical description below thought to be present in ~60% of the population Gross anatomy. It is relatively thin and covers almost all back muscles at the posterior trunk, except the trapezius.. The Couinaud classification (French eponym: pronounced kwee-NO) is currently the most widely used system to describe functional liver anatomy. Extending from the wrist to the elbow joint is the region of the upper extremity called the forearm (antebrachium). The neurovascular bundle formed by the artery and the cords of the brachial plexus are enveloped Backward prolapse of the cusps is prevented by the chordae tendineaealso known as the heart stringsfibrous cords that connect the papillary muscles of the ventricular wall to the atrioventricular valves.. Blood supply is provided by two main branches. Anatomical Course. The muscles of the shoulder support and produce the movements of the shoulder girdle.They attach the appendicular skeleton of the upper limb to the axial skeleton of the trunk. This nucleus contains neurons that provide motor innervation to several muscles of the soft palate, the pharynx, the larynx and the upper part of right superior intercostal vein. The lower esophageal sphincter , a specialized region of the circular muscle of the distal esophagus, manifests itself radiographically as the phrenic ampulla (a.k.a. Reference axes: The movement is in the sagittal plane. Please help BlueLink grow by filling out this 2 minute survey to help us understand our users. It is C-shaped on axial cross-section with convexity projecting anteriorly in the mid-line. It gives a branch to this muscle. The superior branch arises from the popliteal artery while the inferior branch arises from peroneal artery (fibular artery) or the posterior tibial artery.The peroneal and right superior phrenic vein. Beginning at the left colic flexure the descending colon proceeds downwards secondary retroperitoneally at the left abdominal wall and changes over to the S-shaped sigmoid colon in the left iliac fossa. They are divided into three regional groups, from superior to inferior: Spinalis capitis muscle originates from the spinous processes of C7-T1 vertebrae and inserts into the midline of the occipital bone. Formal theory. Key facts; Definition: Collection of neuron cell bodies located in the peripheral nervous system (PNS). They are divided into three regional groups, from superior to inferior: Spinalis capitis muscle originates from the spinous processes of C7-T1 vertebrae and inserts into the midline of the occipital bone. The first three layers are tightly bound together and move as a collective structure. Arterial blood comes from the brachial artery, which arborizes on its way down the arm giving many branches for the supply of the structures of the arm.Learn more about the nerves of the upper limb with Kenhub. The spinalis muscles are the most medial erector spinae muscles. Muscles of the shoulder : Anterior view. The gray matter is the butterfly-shaped central part of the spinal cord and is comprised of neuronal cell bodies.It shows anterior, lateral, and posterior horns. The tibial nerve is the larger of the two branches of the sciatic nerve. The lumbar plexus is a network of nerves that arises from the anterior rami of spinal nerves L1-L4, along with a contribution from the anterior ramus of spinal nerve T12.It is located on the posterior abdominal wall, anterior to the transverse processes of the lumbar vertebrae and within the posterior portion of the psoas major muscle.. The spinalis muscles are the most medial erector spinae muscles. Types: Sensory ganglia: Dorsal root ganglia of spinal nerves and the ganglia of selected cranial nerves. Anatomical structures: The humerus of the arm moves relative to the scapula of the shoulder blade. Autonomic ganglia: Sympathetic (close to the spinal cord), Parasympathetic (neer on in the viscera). Gross anatomy. tracheal veins. Along with the levator scapulae, trapezius and rhomboid muscles, the latissimus dorsi belongs to the Flexion and extension of the shoulder occur like this:. Gross anatomy. type I: the coccyx is curved slightly forward, with its apex pointing caudally (~70%) type II: the coccyx is curved more markedly anteriorly, with its apex pointing straight Course. The parasympathetic nerves are autonomic or visceral branches of the peripheral nervous system (PNS). Sensory innervation (pain and proprioception) at the central tendinous part is innervated by the phrenic nerves, while the peripheral muscular portions are innervated by 6th to 11th intercostal nerves. Tibialis posterior is innervated by the tibial nerve which arises from the L4 and L5 spinal nerves.
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