Posts

The artery connects the internal carotid and the posterior cerebral arteries. Its role is to provide blood supply to the brain. The posterior communicating artery is a location whereaneurysmscan potentially occur. medicalRF.com / Getty Images It is located on the left and right sides of the head and is relatively short. The posterior cerebral arteries branch off from thebasilar artery. The left and right PCAs form the longest sections of the circle of Willis....

The prefrontal cortex is an important part of your brain. It is at the front of the frontal lobe, which is immediately behind the forehead. It affects your behavior, personality, and ability to plan. Eric Raptosh Photography / Getty Images This article will explain more about the anatomy, location, and function of the prefrontal cortex. One of the most important isexecutive function, or the ability to self-regulate and plan ahead....

The prostate secretes fluid that protects and nourishes sperm The prostate is an important gland located between thepenisandbladder. It sits just to the front of the rectum. The gland’s primary function is to secrete fluid that nourishes sperm and keeps it safe. ChrisChrisW / Getty Images Anatomy The prostate is located within the lower pelvis. It sits just beneath the bladder and to the front of the rectum. The prostate is surrounded by a fibrous tissue called the capsule....

The pulmonary vein is unique in that it is the only vein that carries oxygenated blood. Until delivery, fetal blood flow bypasses these vessels, which open at birth upon exposure to oxygen. Medical conditions may occur in adults as well, such as pulmonary venous hypertension. artpartner-images / Getty Images Anatomy The pulmonary veins along with the pulmonary arteries make up the pulmonary circulation. They are made up of three layers of smooth muscle tissue called tunics....

Anatomy Nerves are structures within the body of the deliver messages to and from the brain. Along the path of the nerve, an electrochemical impulse can travel to deliver this information. The peripheral nerves of the upper extremity form from branches ofnerves coming off of the spinal cord. Verywell / Gary Ferster Branches of the brachial plexus form the major peripheral nerves of the upper extremity. One of these nerves is called the radial nerve; others include the median nerve and the ulnar nerve....

These bones serve to protect the contents of your thoracic cavity. They also serve as an attachment point for many muscles and are active during respiration. You have 24 ribs in total; there are 12 on each side of your body. Anatomy There are two types of ribs, namely typical and atypical. Typical ribs have a normalized general structure, while atypical ribs have slight variations. The head of your ribs are shaped like a wedge and have two specific areas calledfacets....

When you lift your arm, your rotator cuff muscles pull the joint together to stabilize your shoulder. Associated Conditions Sometimes, shoulder pain can come on for no apparent reason. Wear and tear of the rotator cuff and shoulder joint can happen with repetitive stress and postural neglect. Verywell / Gary Ferster When this happens, different structures around the rotator cuff are affected. If you have injured your rotator cuff, you may have pain or weakness when lifting your arm....

Anatomy Your sacral vertebrae develop in the first and second months of embryonic development. They form into a single bone by age 30 to complete the fusion process. The first three vertebrae of the sacral region form the wide lateral wings called the alae. fotostorm / Getty Images The alae (also called the ala or wing of sacrum) connect with the blades of pelviscalled theilium. The sacral canal runs down the center of the sacrum, representing the end of the vertebral canal....

A saddlejointalso called a sellar jointallows for many types of movements in many directions. The design of a saddle joint helps keep it stable and reduces the risk of damage from constant use. There are only a few saddle joints in your body. shih-wei / Getty Images These joints are found in the thumb, shoulder, and inner ear. This article describes the anatomy and function of the saddle joint. It also describes problems that can occur with this throw in of joint and ways to treat them....

The right and left sciatic nerves each control functions on the ipsilateral (same) side of the body. Sciatic nerve pain, which is often referred to assciatica, is very common and has many causes. Anatomy The sciatic nerve is a peripheral nerve. gilaxia / Getty Images Its nerve roots emerge from the lower spine and combine to form the sciatic nerve. Many of its branches provide nerve stimulation to the muscles in the legs....

Their main function is to produce a fluid that makes up semen, which is released duringejaculation. They are about 2 cm4 cm (centimeters) long and 1 cm2 cm in diameter. They usually extend back and out from the base of theprostategland, a bit like rabbit ears. SEBASTIAN KAULITZKI/SCIENCE PHOTO LIBRARY / Getty Images The outside of the vesicles are lined by a coat of smooth muscle, which can contract during ejaculation....

The front portions of the greater wings help form the sidewalls of the orbit. The maxillary nerve, mandibular nerve, and middle meningeal vessels, respectively, pass through these openings. Largely, the sphenoid bone represents the floor of the skull. magicmine/Getty Images Portions of this bone are also components of the facial skeleton. Associated conditions include those below. Sphenoid Sinusitis The word “sinusitis” refers to an inflammation of the sinuses. Localized sphenoid sinus infection is rare but can be serious....

The phrenicocolic ligament runs from the colon to the diaphragm. It plays an important role inimmune functionand in recycling RBCs. These are filtered in specialized WBCs calledlymphocyteslocated in the lymph nodules of the spleen. These cells are released to aid in healing when there is an infection or injury. White pulp: The spleen produces WBCs and synthesizes antibodies. This tissue is the site of lymphocyte production. However, medical supplementation is often needed in such cases....