Adenoid
A mass of lymphoid tissue at the back of the nasal cavity that helps catch inhaled germs in childhood.
53 body parts containing the letter N — each with origin, classification, and notes.
Below are body parts that contain the letter N anywhere in the name. Each of the 53 body parts below opens to a full profile.
A mass of lymphoid tissue at the back of the nasal cavity that helps catch inhaled germs in childhood.
A small endocrine gland on top of each kidney that produces stress hormones, mineralocorticoids, and small amounts of sex hormones.
A small finger-shaped pouch attached to the cecum at the start of the large intestine.
The central organ of the nervous system, responsible for thought, sensation, movement, and the control of every other body system.
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.
A delicate central bone of the skull base that contributes to the eye sockets, nasal cavity, and nasal septum.
An anatomical term meaning a sharp bend, applied to several structures including the bend of the corpus callosum and the femur.
A small U-shaped bone in the upper neck that anchors the tongue and several throat muscles without articulating with any other bone.
The broad flat upper portion of the ilium that flares outward to form the side of the pelvis.
A flat, chisel-shaped tooth at the front of the mouth used for biting and cutting food.
The anvil-shaped middle bone of the three ossicles in the middle ear, transmitting sound between the malleus and the stapes.
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.
A bean-shaped organ that filters blood to produce urine while regulating fluid, electrolyte, and acid-base balance.
A small triangular bone embedded in the quadriceps tendon at the front of the knee, also called the patella.
The final section of the digestive tract that absorbs water and electrolytes and forms feces from undigested material.
The voice box, a cartilage-framed organ in the neck that produces sound and protects the lower airway.
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 hollow space behind the nose where inhaled air is filtered, warmed, and humidified before reaching the lungs.
The narrow region between the head and the trunk, containing major vessels, nerves, and the airway.
The microscopic functional unit of the kidney, where blood is filtered and urine is fine-tuned.
A small raised projection at the center of the areola through which milk is delivered from the mammary gland.
One of the two external openings of the nose through which air enters the respiratory tract.
The single bone at the back and base of the skull that surrounds the foramen magnum where the spinal cord exits.
The cranial nerve that carries visual information from the retina to the brain.
An elongated gland behind the stomach that produces digestive enzymes and hormones regulating blood sugar.
The bones of the fingers and toes, arranged in three segments per digit except the thumb and great toe.
The throat, a muscular tube that carries air to the larynx and food to the esophagus.
A small endocrine gland deep in the brain that secretes melatonin and helps regulate the sleep-wake cycle.
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 long, coiled tube where most chemical digestion and nutrient absorption take place.
The long bundle of nerve fibers and cell bodies running down through the vertebral column from the brainstem.
The breastbone, a flat bone in the middle of the chest that anchors the ribs and protects the heart and great vessels.
A butterfly-shaped endocrine gland in the front of the neck that controls metabolism through its hormones.
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 muscular sac in the pelvis that stores urine until it is voluntarily released through the urethra.
Blood vessels that return deoxygenated blood from the body's tissues back to the heart at low pressure.
The two largest veins in the body, returning deoxygenated blood from systemic circulation to the right atrium of the heart.
Either of the two lower chambers of the heart that pump blood out into systemic or pulmonary circulation.
A region of the dominant cerebral hemisphere essential for understanding spoken and written language.
A fatty tissue found in the central cavities of long bones, serving as an energy reserve and a backup site for blood cell production.
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.
The cheekbone, a paired bone that forms the prominence of the cheek and the lateral wall of the eye socket.
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