The Aortic Valve is one of the four valves of the heart. It sits between the left ventricle and the aorta, the body’s main artery. Its job is to let blood leave the heart and prevent it from leaking backward. Clinicians discuss and assess it during routine cardiac exams, echocardiograms, and valve disease evaluations.
Scalene muscles are a small group of muscles on the side of the neck. They connect the neck (cervical spine) to the upper ribs and help control breathing and neck motion. Clinicians commonly discuss them when evaluating neck pain, arm symptoms, and thoracic outlet–type complaints. They are also important landmarks during certain injections and surgeries in the lower neck.
The Tricuspid Valve is one of the four valves in the heart. It sits between the right atrium and right ventricle and helps keep blood moving in the correct direction. It opens and closes with each heartbeat to prevent backward flow. Clinicians commonly discuss it during heart exams, echocardiograms, and evaluation of right-sided heart function.
Levator scapulae is a paired muscle in the back and side of the neck that connects the upper cervical spine to the shoulder blade (scapula). Its plain meaning is “the muscle that lifts the scapula.” Clinically, it is commonly discussed in neck pain, shoulder/upper-back tightness, posture concerns, and scapular (shoulder blade) mechanics. It is also relevant when clinicians evaluate whether symptoms come from muscle irritation versus the cervical spine (discs, joints, or nerves).
The Mitral Valve is a heart valve that controls blood flow between the left atrium and the left ventricle. It opens to let blood move forward and closes to prevent blood from leaking backward. Clinicians assess it to explain symptoms like shortness of breath, fatigue, or heart palpitations. It is also a focus of medical and procedural care when it becomes narrowed or leaky.
Trapezius is a broad, superficial muscle that spans the back of the neck and upper back. It helps move and stabilize the shoulder blades (scapulae) and supports head-and-neck posture. Clinicians commonly discuss Trapezius in evaluations of neck pain, shoulder-blade mechanics, and upper back discomfort. It is also a key landmark in physical exams and in some diagnostic and treatment procedures involving the neck and upper back.
Superior Mesenteric Vein is a major vein in the abdomen that drains blood from the small intestine and parts of the large intestine. It carries nutrient-rich (but oxygen-poor) blood toward the liver through the portal venous system. Clinicians reference it when evaluating abdominal blood flow, portal hypertension, and blood clots in the mesenteric (intestinal) veins. It is most commonly discussed in imaging reports and in the workup of abdominal pain and intestinal vascular conditions.
The Inferior Mesenteric Vein is a blood vessel that drains venous blood from the lower large intestine and upper rectum. It is part of the portal venous system, which carries blood from the intestines to the liver. Clinicians most often refer to it when interpreting abdominal imaging or planning colorectal and portal-venous procedures. It matters because changes in this vein can reflect intestinal, liver, and broader vascular conditions.
Latissimus dorsi is a large, broad muscle on the back that helps move the shoulder and stabilize the torso. It spans from the lower spine and pelvis up to the upper arm bone. It is commonly discussed in shoulder function, posture, and certain spine- and back-related pain patterns. It is also used in reconstructive surgery as a muscle flap to cover tissue defects.
Psoas refers most commonly to the psoas major, a deep muscle that runs from the lower spine to the thigh bone. It works with the iliacus muscle to form the iliopsoas, the primary hip flexor. Clinicians talk about the Psoas in spine, hip, and pelvic pain evaluations because it sits close to discs, vertebrae, and major nerves. It is also an important landmark in certain lumbar spine procedures and imaging interpretations.