Heart Parts
This node is the pacemaker of the heart
SA (sinoatrial)
These blood vessels carry blood away from the heart
Arteries
The exchange of air at the lungs
External respiration
This muscular partition separates the thoracic cavity from the abdominal cavity and moves with each inspiration
Diaphragm
The relaxation phase of the heartbeat
Diastole
This heart valve is located between the left atrium and left ventricle
Mitral (bicuspid)
The largest artery in the body carrying blood away from the heart
Aorta
The inner layer of the pleura, closest to the lungs
Visceral pleura
Nasopharyngeal lymphatic tissue
Adenoids
This type of respiration involves an exchange of gases at the level of the cells.
Internal
This structure separates the two upper chambers of the heart
Interatrial septum
The thickest walled chamber of the heart that pumps blood out of the heart to all parts of the body
Left ventricle
The region between the lungs that contains the trachea, heart, lymph nodes, major blood vessels, esophagus and bronchial tubes.
Mediastinum
Voicebox aka
Larynx
Windpipe aka
Trachea
The inner layer of the sac around the heart that is closest to the heart itself
Visceral pericardium
These are found in veins to prevent the backflow of blood and to keep it moving in one direction
Valves
Collections of air sacs in the lungs
Alveoli
Throat aka
Pharynx
This flap of cartilage prevents food from entering the respiratory tract when swallowing
Epiglottis
The upper chambers of the heart
Atria
The largest veins (having an upper and lower portion) that carry oxygen-poor blood into the heart from the body
Venae cavae
The lower portion of each lung
Base
Double-layered membrane covering the outside of each lung
Pleura
Withdrawal of CSF for diagnosis or relief of pressure on the brain
Lumbar puncture