The underlying cause of Tay-Sachs disease is __________.
A)the lack of lysosomes in the nervous system
B)ingestion of too many lipids
C)the lack of the enzymes needed to break down a glycolipid abundant in nerve cell membranes
D)nerve cells storing too much lipids
C)the lack of the enzymes needed to break down a glycolipid abundant in nerve cell membranes
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Testicular feminization syndrome is an example of:
a. hypersecretion b. hyposecretion c. over-sensitization d. neuropathology e. abnormal target-cell responsiveness
Growth due to an increase in cell number is called ________.
hypertrophy hyperplasia atrophy dystrophy
Which of the following muscles is the prime mover for frowning?
A. Orbicularis oculi B. Mentalis C. Risorius D. Zygomaticus major E. Depressor anguli oris
When a neuron membrane is "at rest," which of the following is true??
A) ?There are large amounts of potassium (K+) ions inside the cells. B) ?There are large amounts of sodium (Na+) ions inside the cells. C) ?The potassium (K+) and sodium (Na+) ions are in balance.