Aortic Bulb
The dilated base of the ascending aorta just above the aortic valve, containing the openings of the coronary arteries.
52 body parts containing the letter U — each with origin, classification, and notes.
Below are body parts that contain the letter U anywhere in the name. Each of the 52 body parts below opens to a full profile.
The dilated base of the ascending aorta just above the aortic valve, containing the openings of the coronary arteries.
Either of the two upper chambers of the heart that receive blood returning from circulation.
One of the two rounded fleshy mounds on the back of the pelvis, formed mostly by the gluteal muscles.
An anatomical term for a horn-shaped projection, used for several structures including the cornua of the hyoid bone and the uterus.
The first and shortest section of the small intestine, where stomach contents mix with digestive juices from the pancreas and liver.
The slender lateral bone of the lower leg that runs alongside the tibia and forms the outer ankle bump.
An anatomical term meaning a sharp bend, applied to several structures including the bend of the corpus callosum and the femur.
The largest and most superficial muscle of the buttock, responsible for hip extension and a powerful push-off when climbing or running.
The firm pink tissue that surrounds the base of each tooth and covers the jawbone, also called the gingiva.
The continuous muscular tube from the stomach through the intestines that digests food and absorbs nutrients.
The rounded base of a hair follicle, where new hair cells are produced by rapidly dividing matrix cells.
A seahorse-shaped brain structure deep in the temporal lobe that is essential for forming new memories.
A small region at the base of the brain that controls hormone release, body temperature, hunger, and many basic drives.
The large flared upper portion of the hip bone that forms the crest you can feel at your waist.
The anvil-shaped middle bone of the three ossicles in the middle ear, transmitting sound between the malleus and the stapes.
The lower and posterior portion of the hip bone, supporting body weight during sitting.
The middle section of the small intestine where most nutrient absorption takes place after food leaves the duodenum.
A large opening at the base of the skull through which several cranial nerves and the internal jugular vein exit the cranial cavity.
A pair of large veins in the neck that drain blood from the head and brain back toward the heart.
Resident immune cells lining the liver's blood sinusoids that engulf bacteria and old red blood cells.
One of two spongy organs in the chest that exchange oxygen and carbon dioxide between the bloodstream and the air.
A pair of spongy organs in the thoracic cavity responsible for gas exchange between air and blood.
The oral cavity, the entry point of the digestive tract where food is taken in, chewed, and mixed with saliva.
A column of deep, short back muscles that span two to four vertebrae each and stabilize the spine.
A small forebrain structure at the front of the brain that processes incoming signals about smell.
A short, large vessel that carries deoxygenated blood from the right ventricle to the lungs.
A four-sided anatomical gap in the shoulder region that allows passage of the axillary nerve and posterior circumflex humeral artery.
A short, flat muscle of the hip that rotates the thigh outward and helps stabilize the hip joint.
A deep muscle of the posterior abdominal wall that stabilizes the lower spine and helps bend the trunk sideways.
A group of four large muscles on the front of the thigh that extend the knee and stabilize the kneecap.
One of two long bones of the forearm, located on the thumb side and rotating around the ulna.
The final straight section of the large intestine that stores fecal material before elimination.
A group of four muscles and their tendons that surround the shoulder joint and keep the head of the humerus seated in the socket.
The shoulder blade, a flat triangular bone that connects the humerus to the clavicle and supports shoulder motion.
The bony framework of the head that protects the brain and forms the structure of the face.
The breastbone, a flat bone in the middle of the chest that anchors the ribs and protects the heart and great vessels.
A muscular organ in the mouth that handles food during chewing and swallowing and supports taste and speech.
One of two long bones of the forearm, located on the little finger side and forming the main hinge with the humerus at the elbow.
A flexible tube connecting the developing fetus to the placenta, carrying blood between the two.
A tube that carries urine from the bladder out of the body, and in males also carries semen during ejaculation.
A muscular sac in the pelvis that stores urine until it is voluntarily released through the urethra.
A muscular pear-shaped organ in the female pelvis where a fertilized egg implants and a fetus develops during pregnancy.
A small fleshy lobe hanging from the back of the soft palate that helps with swallowing and speech.
The middle and largest layer of the adrenal cortex, producing cortisol and other glucocorticoid hormones.
The outermost layer of the adrenal cortex, producing aldosterone to regulate sodium balance and blood pressure.
The innermost layer of the adrenal cortex, producing weak androgens that supplement gonadal sex hormones.
A facial muscle that draws the corner of the mouth upward and outward, producing the characteristic action of smiling.
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