Which type of membrane channels are found in axons?
A) voltage-gated Na+ channels
B) voltage-gated K+ channels
C) chemically gated Na+ and K+ channels
D) voltage-gated Ca2+ channels
E) voltage-gated Na+ and K+ channels
Answer: E
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Which type of hepatitis is spread via fecal contamination of objects such as food, clothing, toys, and eating utensils and is characterized by loss of appetite, malaise, nausea, diarrhea, fever, and chills
a) Hepatitis A b) Hepatitis B c) Hepatitis C d) Hepatitis D e) Hepatitis E
____________________ are contractile cells that wrap around capillary endothelial cells throughout the body
Fill in the blank(s) with correct word
Birth control pills act as contraceptives by
a. preventing development of the endometrium into a suitable site for implantation b. preventing ovulation by inhibiting GnRH and thus FSH and LH secretion c. killing sperm d. precipitating in the cervical canal to act as a barrier to sperm entry e. increasing muscular contractions in the female reproductive tract so that ovulated eggs are flushed out before they have a chance to be fertilized
The tympanic membrane vibrates to frequencies between
A) 2,000-3,000 Hz. B) 20-2,000 Hz. C) 2-200 Hz. D) 200-200,000 Hz. E) 20-20,000 Hz.