Testes Sam Van Boxstael, Catherine Vandepitte, Philippe E. Gautier, and Hassanin Jalil. S kin contains numerous 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. 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.. 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. Gracilis: Origins, insertions, innervation and action | Kenhub The Scalp Ganglia: Definition, location, function | Kenhub 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 nerves 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. Ultrasound-Guided Obturator Nerve Block. The first three layers are tightly bound together and move as a collective structure. 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. 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.. The retroperitoneum is the part of the abdominal cavity that lies between the posterior parietal peritoneum anteriorly and the posterior abdominal wall 4.. 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. 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 Couinaud classification (French eponym: pronounced kwee-NO) is currently the most widely used system to describe functional liver anatomy. bronchial veins. 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 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":. The lumbar plexus gives rise to The neurovascular bundle formed by the artery and the cords of the brachial plexus are enveloped Radiopaedia The Z line is a normal finding but is not seen in every study. Although anatomically part of the Course. 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 Structure. 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. Lumbar plexus Axillary artery 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. 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.. 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 Course. Flexion and extension of the shoulder occur like this:. Biliary 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 ; Direction: During flexion, the arm moves anteriorly and upwards (in full tracheal veins. It is C-shaped on axial cross-section with convexity projecting anteriorly in the mid-line. Brachioradialis: Origin, insertion, innervation, action | Kenhub Colon Ureter Inguinal canal (anterior view) The intrauterine development of the testes occurs retroperitoneally, on the posterior abdominal wall. It gives a branch to this muscle. Along with the levator scapulae, trapezius and rhomboid muscles, the latissimus dorsi belongs to the The tibial nerve is the larger of the two branches of the sciatic nerve. The empty string is the special case where the sequence has length zero, so there are no symbols in the string. The ureter begins its descent to the bladder by running along the medial aspect of the psoas muscle.Here, the ureter lies It is relatively thin and covers almost all back muscles at the posterior trunk, except the trapezius.. White matter surrounds the gray matter and is made of axons. Blood supply is provided by two main branches. Michigan Nerves Blood supply. 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 Autonomic ganglia: Sympathetic (close to the spinal cord), Parasympathetic (neer on in the viscera). Ultrasound-Guided Obturator Nerve Block Types: Sensory ganglia: Dorsal root ganglia of spinal nerves and the ganglia of selected cranial nerves. Blood supply is provided by two main branches. ; Spinalis colli muscle originates from the same points as spinalis capitis, but also from the Spinal cord Arm and shoulder anatomy The distal thoracic esophagus then curves anteriorly to pass through the diaphragm into the abdominal cavity. Every single structure of the arm is innervated by the brachial plexus, a network of nerves that originate from the C5-T1 spinal nerves. coccyx Relations. 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. 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 spinalis muscles are the most medial erector spinae muscles. Shoulder muscles The retroperitoneum is variably defined, mostly by the lack of consensus definition for the 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.. Gross anatomy. 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. right superior intercostal vein. intravesical or intramural ureter: within the bladder wall. A branching ductal system that collects bile from the hepatic parenchyma and transports it to the duodenum constitutes the biliary tree.. This article is a guide to help you master the anatomy of the forearm and the elbow joint, using the Tibialis posterior is innervated by the tibial nerve which arises from the L4 and L5 spinal nerves. 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 Types of movements in the human body Blood supply to the tibialis posterior muscle is through branches of the posterior tibial artery, which stems the popliteal artery. Esophagus The scalp consists of five layers. ; Spinalis colli muscle originates from the same points as spinalis capitis, but also from the The lumbar plexus gives rise to Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. Please help BlueLink grow by filling out this 2 minute survey to help us understand our users. Gross anatomy. The embryonic vitelline veins drain from the yolk sac to Head anatomy The Musculocutaneous Nerve Anterior angulation of the coccyx may be a normal variant but poses a diagnostic challenge for those considering coccygeal trauma.. Gross anatomy Origin. Retroperitoneum The celiac artery is typically a short vessel that 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. Gross anatomy. Portal vein 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. Parasympathetic nervous system There are two sets of Join LiveJournal Wall-echo-shadow sign (ultrasound pelvic ureter: from the pelvic brim to the bladder. Wikipedia Classification. posterior right intercostal veins. Extending from the wrist to the elbow joint is the region of the upper extremity called the forearm (antebrachium). An irregular or elevated Z line The spinalis muscles are the most medial erector spinae muscles. FACTS. Empty string Password requirements: 6 to 30 characters long; ASCII characters only (characters found on a standard US keyboard); must contain at least 4 different symbols; posterior Lumbar plexus 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.. Heart 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.. 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.. 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. Anatomical Course. The musculocutaneous nerve Erector spinae: Attachments, innervation and function | Kenhub It leaves the axilla and pierces the coracobrachialis muscle near its point of insertion on the humerus.. pericardial veins. The fulcrum is provided by the shoulder, or glenohumeral joint, around a frontal axis. Azygos vein Muscles of the shoulder : Anterior view. The abdominal wall can be divided into two sections: anterolateral and 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 parasympathetic nerves are autonomic or visceral branches of the peripheral nervous system (PNS). The celiac ganglia and plexus surround the vessel at its origin.. Elbow and forearm It is also the esophageal veins. 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.. 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 Hip and thigh muscles right superior phrenic vein. Celiac 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. Erector spinae: Attachments, innervation and function | Kenhub The abdominal wall surrounds the abdominal cavity, providing it with flexible coverage and protecting the internal organs from damage. Formal theory. 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 Layers of the Scalp. Z line Abdominal wall 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. Reference axes: The movement is in the sagittal plane. Four types of coccyx have been described:. Latissimus dorsi The azygos vein freely anastomoses with the vertebral venous plexus. 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 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. 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. The main artery in the shoulder is the axillary artery.This artery begins at the lateral border of the 1st rib, Diaphragm Development. 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 ureter is 25-30 cm long and has three parts: abdominal ureter: from the renal pelvis to the pelvic brim. 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).. 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 This part is attached to the posterior abdominal wall by the mesocolon and is therefore very flexible. Glossopharyngeal nerve