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The valve that controls the release of feces from the recturm. It has an internal part made of smooth muscle (thus involuntary) and an external part made of skeletal muscle (thus voluntary).
the paired ventilatory tubes of a vertebrate that branch into each lung at the lower end of the trachea
Derived from tertiary bronchi. Walls made of smooth muscle. Subdivide into alveolar ducts that are derived from respiratory bronchioles.
inferior vena cava
receives blood from lower limbs and abdominal organs and empties into the posterior part of the right atrium of the heart
the last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body
the chamber on the left side of the heart that receives arterial blood from the left atrium and pumps it into the aorta
A short tube at the end of the large intestine where waste material is compressed into a solid form before being eliminated
The upper right chamber of the heart, where deoxygenated blood is received from the vena cava and then sent to the right ventricle.
the chamber on the right side of the heart that receives venous blood from the right atrium and pumps it into the pulmonary trunk
(air filled pocket with mucous membrane) - ducts drain into internal nose; help with conditioning of incoming air.
Vouluntary, striated muscle that moves bones, works in pairs and is attatched to bones by tendons
a muscle that contracts involuntary and is found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)
food is churned by muscles here, chemicles like hydrochloric acid and pepsin added and forms a liquid called chyme
superior vena cava
receives blood from the head and arms and chest and empties into the right atrium of the heart
the cavity in the vertebrate body enclosed by the ribs between the diaphragm and the neck and containing the lungs and heart
membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
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