Conus medullaris is the tapered, lower end of the spinal cord. It sits inside the spinal canal, usually around the upper lumbar spine. It is a key anatomical landmark on spine MRI and during many spinal procedures. Clinicians use the term when discussing spinal cord level, nerve function, and certain emergencies.
Cardiac Apex is the pointed, lower tip of the heart where the left ventricle tapers. It sits in the left side of the chest and helps define where the heart’s “beat” is often felt. Clinicians use it as a landmark in the physical exam and in cardiac imaging. It is also referenced in some heart procedures that involve access near the left ventricular tip.
The Spinal cord is a long bundle of nerve tissue that connects the brain to the body. It runs inside the spinal canal, protected by the vertebrae (spinal bones). It carries movement, sensation, and autonomic (automatic body function) signals. It is central to how spine specialists evaluate and treat neurologic problems related to the neck and back.
The Interatrial Septum is the wall of tissue that separates the heart’s two upper chambers (the right atrium and left atrium). It helps keep oxygen-poor and oxygen-rich blood on the correct sides of the heart. Clinicians commonly reference it during heart imaging and during certain catheter-based procedures. It is also central to understanding openings or defects between the atria, such as a patent foramen ovale (PFO) or atrial septal defect (ASD).
The Interventricular Septum is the wall of heart muscle that separates the left and right ventricles. It helps keep oxygen-rich blood on the left side and oxygen-poor blood on the right side. Clinicians refer to it in heart imaging, electrocardiograms, and structural heart assessments. It is also important in certain cardiomyopathies, heart attacks, and congenital heart conditions.
A Schmorl node is when part of an intervertebral disc pushes into the bone of a nearby vertebra. It is usually seen on spine imaging such as MRI, CT, or X-ray. Many Schmorl node findings are incidental, meaning they are not clearly the source of symptoms. The term is most commonly used by radiologists and spine clinicians to describe an imaging feature.
The Ventricular Septum is the muscular wall that separates the heart’s right and left ventricles. It helps keep oxygen-poor blood on the right side and oxygen-rich blood on the left side. Clinicians refer to it when assessing heart pumping function, blood flow, and heart rhythm pathways. It is commonly evaluated on echocardiography, cardiac MRI, and during structural heart procedures.
The Cartilaginous endplate is a thin layer of cartilage that sits between each vertebra and the intervertebral disc. It helps the disc attach to the vertebral body and helps distribute spinal loads. Clinicians most often discuss it when evaluating disc degeneration, endplate injury, or back pain sources. It also matters during spine surgery because surgeons work near the endplate–disc interface.
The Atrial Septum is the wall that separates the heart’s two upper chambers (the right atrium and left atrium). It helps keep oxygen-poor blood and oxygen-rich blood moving through the correct sides of the heart. Clinicians refer to it when interpreting heart imaging and when planning certain catheter-based procedures. It is also a key focus in some congenital heart conditions (present from birth).
Nucleus pulposus is the soft, gel-like center of an intervertebral disc. It sits between the vertebrae in the neck (cervical), mid-back (thoracic), and low back (lumbar) spine. Its plain role is to help the disc absorb load and allow smooth motion between bones. In clinical care, it is commonly discussed in disc degeneration, disc herniation, imaging reports, and spine procedures.