Discuss the roles of agonists, antagonists, synergists, and fixators in movement
What will be an ideal response
The agonist (prime mover) contracts to cause a particular movement. The antagonist causes the opposite action, and so, must relax while the agonist contracts. Synergists prevent unwanted movements during an action or aid the agonist during the movement, while fixators stabilize the origin of the agonist. Both allow the agonist to work more efficiently.
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Endocrine disruptors are environmental chemicals, which, if people and other animals are exposed, can have hormone-mimicking or hormone -blocking effects. These chemicals are used in industries and in homes and are associated with such commonly used products as pesticides and herbicides, plastic food containers and baby bottles. Those that mimic or block sex steroids are of special concern,
because they are present in household plastics and are fat-soluble, thus easily stored in fatty tissue of the body and can affect a developing fetus. Research is ongoing and results are controversial, but these chemicals have been associated with: What will be an ideal response?
Which digestive processes are missed by a patient who has a feeding tube placed in their stomach?
a) Patients with feeding tubes placed in their stomachs will not go through mechanical digestion in the stomach and the chemical digestion of carbohydrates and proteins. b) Patients with feeding tubes placed in their stomachs will not go through mastication and the initial chemical digestion of carbohydrates. c) Patients with feeding tubes placed in their stomachs will not go through the process of absorption in the small intestines since the tube provides all the nutrients necessary. d) Patients with feeding tubes placed in their stomachs will not go through mechanical or chemical digestion in the mouth or stomach and absorption in the small intestine will be minimal.
The shaft of a long bone is called the
A) epiphysis. B) diaphysis. C) epiphyseal plate. D) metaphysis. E) lamella.