Alveoli
Microscopic air sacs at the end of the bronchioles where gas exchange between air and blood takes place.
32 body parts containing the letter A — each with origin, classification, and notes.
Below are body parts that contain the letter A anywhere in the name. Each of the 32 body parts below opens to a full profile.
Microscopic air sacs at the end of the bronchioles where gas exchange between air and blood takes place.
The largest artery in the body, carrying oxygen-rich blood from the heart's left ventricle to the rest of the body.
A small finger-shaped pouch attached to the cecum at the start of the large intestine.
Thick-walled blood vessels that carry oxygenated blood from the heart to tissues throughout the body.
Either of the two upper chambers of the heart that receive blood returning from circulation.
Microscopic blood vessels where the exchange of oxygen, nutrients, and waste between blood and tissues occurs.
A pair of major arteries in the neck that supply blood to the brain, face, and neck tissues.
Eight small bones arranged in two rows that form the bony framework of the wrist.
The collarbone, a horizontal S-shaped bone connecting the arm to the rest of the skeleton.
A dome-shaped sheet of muscle separating the thoracic and abdominal cavities and serving as the main muscle of breathing.
A small pear-shaped organ that stores and concentrates bile produced by the liver.
A muscular pump in the thoracic cavity that circulates blood through the body via the cardiovascular system.
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.
Five long bones in the palm of the hand that connect the wrist to the fingers.
The hollow space behind the nose where inhaled air is filtered, warmed, and humidified before reaching the lungs.
An elongated gland behind the stomach that produces digestive enzymes and hormones regulating blood sugar.
The kneecap, a triangular sesamoid bone embedded in the tendon of the quadriceps in front of the knee.
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 short, large vessel that carries deoxygenated blood from the right ventricle to the lungs.
One of two long bones of the forearm, located on the thumb side and rotating around the ulna.
The shoulder blade, a flat triangular bone that connects the humerus to the clavicle and supports shoulder motion.
A long, coiled tube where most chemical digestion and nutrient absorption take place.
A J-shaped muscular sac that stores swallowed food and begins protein digestion through acid and enzymes.
The windpipe, a cartilage-reinforced tube that conducts air between the larynx and the bronchi.
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.
The two largest veins in the body, returning deoxygenated blood from systemic circulation to the right atrium of the heart.
The 33 bones that stack to form the spinal column, supporting the body and protecting the spinal cord.
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