The hormones released by the islets of Langerhans to regulate sugar levels in the body are ______ and glucagon
A group of cells that are designed to work together as a unit is a(n)_____?
The brain and the spinal cord are part of the _______ nervous system.
The path that food follows through the digestive system from when it is eaten until the indigestible wastes leave the body is the ______ canal.
The joints that give the shoulders and hips their wide range of motion are the _____ joints.
The tissue used by the body to conduct impulses is the _____ tissue.
Blood enters the heart through the upper chambers, which are called _____.
Which system concentrates and removes liquid waste?
Which body system provides movement for the body?
Which body system supports the body and protects vital organs?
Which body system transports nutrients and oxygen to cells and carries wastes from cells?
Which body system covers and protects the body?
Which body system controls other body systems?
As a person ages, his bones can begin rubbing together at their joints; this is a result of the wearing away of the _____.
when the calcium level in the blood is too low, the thyroid gland releases a chemical messenger that signals the bones to release calcium into the bloodstream. What type of chemical is released?
The word exfoliate means to remove layers in flakes or scales. an exfoliating soap or body wash is so named because it helps remove the dead, outermost layers of skin cells. From which of the main layers of the skin do these cells come?
What is the first section of the small intestine?
What is the scientific name for the windpipe?
What is the largest lymphatic organ?
Which structure exchanges oxygen and nutrients between the blood of an unborn child and his mother?
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