1
Adenoid
Tonsilla pharyngea
A mass of lymphoid tissue at the back of the nasal cavity that helps catch inhaled germs in childhood.
Below are body parts that contain the letter I anywhere in the name. Each of the 72 body parts below opens to a full profile.
Table of contents
List of Body Parts That Contain I
2
Alveoli
Alveoli pulmonis
Microscopic air sacs at the end of the bronchioles where gas exchange between air and blood takes place.
3
Aortic Bulb
Bulbus aortae
The dilated base of the ascending aorta just above the aortic valve, containing the openings of the coronary arteries.
4
Appendix
Appendix vermiformis
A small finger-shaped pouch attached to the cecum at the start of the large intestine.
5
Arteries
Thick-walled blood vessels that carry oxygenated blood from the heart to tissues throughout the body.
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Atrium
Atrium cordis
Either of the two upper chambers of the heart that receive blood returning from circulation.
7
Brain
Encephalon
The central organ of the nervous system, responsible for thought, sensation, movement, and the control of every other body system.
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Capillaries
Microscopic blood vessels where the exchange of oxygen, nutrients, and waste between blood and tissues occurs.
10
Carotid Artery
Arteria carotis
A pair of major arteries in the neck that supply blood to the brain, face, and neck tissues.
11
Clavicle
Clavicula
The collarbone, a horizontal S-shaped bone connecting the arm to the rest of the skeleton.
12
Deltoid
Musculus deltoideus
A triangular muscle that caps the shoulder and produces most arm-lifting movements.
13
Diaphragm
Diaphragma
A dome-shaped sheet of muscle separating the thoracic and abdominal cavities and serving as the main muscle of breathing.
14
Epiglottis
Epiglottis
A leaf-shaped cartilaginous flap at the back of the tongue that covers the airway during swallowing.
15
Ethmoid Bone
Os ethmoidale
A delicate central bone of the skull base that contributes to the eye sockets, nasal cavity, and nasal septum.
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Fibula
Fibula
The slender lateral bone of the lower leg that runs alongside the tibia and forms the outer ankle bump.
18
Gluteus Maximus
Musculus gluteus maximus
The largest and most superficial muscle of the buttock, responsible for hip extension and a powerful push-off when climbing or running.
19
Hair Bulb
Bulbus pili
The rounded base of a hair follicle, where new hair cells are produced by rapidly dividing matrix cells.
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Hip
Articulatio coxae
The ball-and-socket joint where the head of the femur meets the cup of the pelvis.
22
Hippocampus
Hippocampus
A seahorse-shaped brain structure deep in the temporal lobe that is essential for forming new memories.
23
Hyoid Bone
Os hyoideum
A small U-shaped bone in the upper neck that anchors the tongue and several throat muscles without articulating with any other bone.
24
Iliac Artery
Arteria iliaca
A large artery in the pelvis that supplies blood to the lower limb and pelvic organs.
25
Iliac Wing
Ala ossis ilii
The broad flat upper portion of the ilium that flares outward to form the side of the pelvis.
26
Ilium
Os ilium
The large flared upper portion of the hip bone that forms the crest you can feel at your waist.
27
Incisor
Dens incisivus
A flat, chisel-shaped tooth at the front of the mouth used for biting and cutting food.
28
Incus
Incus
The anvil-shaped middle bone of the three ossicles in the middle ear, transmitting sound between the malleus and the stapes.
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Ischium
Os ischii
The lower and posterior portion of the hip bone, supporting body weight during sitting.
31
Jugular Vein
Vena jugularis
A pair of large veins in the neck that drain blood from the head and brain back toward the heart.
32
Kidney
Ren
A bean-shaped organ that filters blood to produce urine while regulating fluid, electrolyte, and acid-base balance.
33
Lacrimal Sac
Saccus lacrimalis
A small pouch at the inner corner of the eye that collects tears before they drain into the nose.
34
Large Intestine
Intestinum crassum
The final section of the digestive tract that absorbs water and electrolytes and forms feces from undigested material.
35
Lip
Labium oris
One of the two fleshy folds that form the entrance to the mouth and help shape speech.
36
Liver
Hepar
The largest internal organ, performing hundreds of metabolic, storage, and detoxification functions.
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Multifidi
Musculi multifidi
A column of deep, short back muscles that span two to four vertebrae each and stabilize the spine.
39
Nasal Cavity
Cavitas nasi
The hollow space behind the nose where inhaled air is filtered, warmed, and humidified before reaching the lungs.
40
Nipple
Papilla mammaria
A small raised projection at the center of the areola through which milk is delivered from the mammary gland.
41
Nostril
Naris
One of the two external openings of the nose through which air enters the respiratory tract.
42
Occipital Bone
Os occipitale
The single bone at the back and base of the skull that surrounds the foramen magnum where the spinal cord exits.
43
Optic Disc
Discus nervi optici
A small circular area on the retina where the optic nerve fibers leave the eye and blood vessels enter.
44
Optic Nerve
Nervus opticus
The cranial nerve that carries visual information from the retina to the brain.
45
Pelvis
Pelvis
A bowl-shaped ring of bones at the base of the spine that supports body weight and houses pelvic organs.
46
Pericardial Sac
Pericardium
A tough double-layered sac that surrounds the heart, anchoring it and reducing friction during each beat.
47
Pineal Gland
Glandula pinealis
A small endocrine gland deep in the brain that secretes melatonin and helps regulate the sleep-wake cycle.
48
Quadratus Femoris
Musculus quadratus femoris
A short, flat muscle of the hip that rotates the thigh outward and helps stabilize the hip joint.
49
Quadriceps
Musculus quadriceps femoris
A group of four large muscles on the front of the thigh that extend the knee and stabilize the kneecap.
50
Radius
Radius
One of two long bones of the forearm, located on the thumb side and rotating around the ulna.
51
Ribs
Costae
Twelve pairs of curved bones that form the rib cage and protect the organs of the chest.
52
Small Intestine
Intestinum tenue
A long, coiled tube where most chemical digestion and nutrient absorption take place.
53
Spinal Cord
Medulla spinalis
The long bundle of nerve fibers and cell bodies running down through the vertebral column from the brainstem.
54
Thyroid Gland
Glandula thyroidea
A butterfly-shaped endocrine gland in the front of the neck that controls metabolism through its hormones.
55
56
Umbilical Cord
Funiculus umbilicalis
A flexible tube connecting the developing fetus to the placenta, carrying blood between the two.
57
Urinary Bladder
Vesica urinaria
A muscular sac in the pelvis that stores urine until it is voluntarily released through the urethra.
58
Vasti
Musculi vasti
The three vastus muscles of the thigh that, together with the rectus femoris, make up the quadriceps group.
59
Veins
Blood vessels that return deoxygenated blood from the body's tissues back to the heart at low pressure.
60
Ventricle
Ventriculus cordis
Either of the two lower chambers of the heart that pump blood out into systemic or pulmonary circulation.
61
Wernicke Area
Area Wernicke
A region of the dominant cerebral hemisphere essential for understanding spoken and written language.
62
White Blood Cells
Leucocyti
A family of immune cells circulating in the blood that defend the body against infection and injury.
63
White Matter
Substantia alba
The pale, deeper layer of the brain and spinal cord made up of myelinated nerve fibers connecting different regions.
64
Wisdom Tooth
Dens serotinus
The third molar at the very back of each side of the jaw, usually the last permanent tooth to erupt in early adulthood.
65
Wrist
Carpus
The joint complex between the hand and the forearm, made up of eight small carpal bones and several joint surfaces.
66
Xiphoid Cartilage
The cartilaginous tip of the xiphoid process in young people, before it ossifies, providing flexibility at the inferior sternum.
67
Xiphoid Process
Processus xiphoideus
A small cartilaginous extension at the lower end of the sternum that serves as an attachment point for several muscles and ligaments.
68
Zona Fasciculata
Zona fasciculata
The middle and largest layer of the adrenal cortex, producing cortisol and other glucocorticoid hormones.
69
Zona Reticularis
Zona reticularis
The innermost layer of the adrenal cortex, producing weak androgens that supplement gonadal sex hormones.
70
Zygomatic Arch
Arcus zygomaticus
The bony arch on the side of the face formed by the temporal and zygomatic bones, visible as the upper cheek ridge.
71
Zygomatic Bone
Os zygomaticum
The cheekbone, a paired bone that forms the prominence of the cheek and the lateral wall of the eye socket.
72
Zygomaticus Major
Musculus zygomaticus major
A facial muscle that draws the corner of the mouth upward and outward, producing the characteristic action of smiling.
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