Discuss the effects of growth hormone (GH) deficiency with examples
What will be an ideal response?
GH deficiency may be caused by a pituitary defect (lack of GH) or may occur secondary to hypothalamic dysfunctions. Hyposecretion of GH in a child is one cause of dwarfism. The predominant feature is short stature caused by retarded skeletal growth. In addition, growth may be thwarted because the tissues fail to respond normally to GH. An example is Laron dwarfism, which is characterized by abnormal GH receptors that are unresponsive to the hormone. The symptoms of this condition resemble those of severe GH deficiency even though blood levels of GH are actually high. In some instances, GH levels are adequate and target-cell responsiveness is normal, but IGF-I is lacking, as is the case with African pygmies.
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Movement of the hand at the wrist toward the thumb side of the arm (frontal plane) is known as which of the following?
A. radial deviation B. ulnar deviation C. abduction D. adduction
List 3 reasons hyperthermia may occur
What will be an ideal response?
Which of the following choices places the components of a homeostatic control system in proper order?
A. Receptor, control center, stimulus, effector B. Effector, control center, stimulus, receptor C. Stimulus, control center, effector, receptor D. Stimulus, receptor, control center, effector E. Receptor, effector, control center, stimulus
The gene coding for a polypeptide made of 51 amino acids would have a minimum of ________ bases
A) 153 B) 20 C) 51 D) 102