When the systole occurs the ventricle is contracting.
a. true
b. false
Ans: a. true
You might also like to view...
Cryptosporidium parvum oocysts are highly resistant to
A) heat. B) filtration. C) desiccation. D) chlorine.
Describe the structure of the placenta. What parts are maternal and what parts are fetal?
What will be an ideal response?
Some animals are facing extinction as a direct result of deliberate efforts to exterminate them because of their
perceived harm to economically useful species. Examples of these include:a. cheetahs and rhinos. b. passenger pigeons and cheetahs. c. prairie dogs and rhinos. d. rhinos and macaws. e. mountain lions and wolves.
When environmental estrogens trigger premature puberty in girls, the main organs affected are the
A) ovaries. B) thyroid gland and pituitary gland. C) adrenal cortex. D) pituitary gland and parathyroid glands.