The part of the body that connects the heel bone to the muscles in the lower part of the leg.
(Achilles) tendon
The large, flat bones on each side of your back below your shoulder.
scapulae, shoulder blades
The flow of blood around the body.
Bloodstream
The organ in your chest that sends the blood around your body.
Heart
One of the small bones that form the spine.
vertebra
The frame of bones supporting a human body.
Skeleton
To draw air into the lungs by breathing
Breath in, inhale, inspire
The cells that carry oxygen around the body.
Erythrocytes, red blood cells
A strong, elastic type of tissue found in humans in the joints and other places such as the nose, throat, and ears.
Cartilage
The middle part of the body below the neck and above the waist.
chest, thorax, rib cage
The collective term used for these multiple-branched bronchi.
Bronchial tree
The regular movement or sound that the heart makes as it sends blood around your body.
Heartbeat
The part of the human body from the shoulder to the fingertips.
Upper limbs, upper extremities, arms
To expel the air out of the lungs.
Breath out, exhale, expire
The gas formed when carbon is burned, or when people or animals breathe out.
Carbon dioxide
The bones between the shoulder and neck.
clavicles, collarbones
Very small air bags in the lungs, with thin walls that allow oxygen to enter the blood.
Alveoli, air sacs
The structures in the heart that control the flow of blood.
Valves
A long, flat, vertical bone in the centre of a person's chest.
Sternum, breastbone
The process of breathing.
Respiration
The part of the human body that includes the hips, thighs, knees, legs, ankles, and feet.
Lower limbs, lower extremities, legs
The tubular structures that transport blood throughout the body.
Blood vessels
The rounded structure of bones that connects the legs to the main part of the body.
pelvic girdle
Two organs in the chest with which people and some animals breathe.
Lungs