Binding of norepinephrine (NE) to an alpha-adrenergic receptor is usually excitatory, and binding to a beta-adrenergic receptor is usually inhibitory
Indicate whether the statement is true or false
TRUE
Anatomy & Physiology
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Most brain tumors of neural origin consist of glial cells
Indicate whether the statement is true or false
Anatomy & Physiology
Shortly after ovulation,
A. the granulosa cells become corpus luteum cells. B. estrogen increases but progesterone decreases. C. the level of LH rises even more than before ovulation. D. GnRH receptors upregulate. E. corpus luteum degenerates.
Anatomy & Physiology
In humans, only ________ cells have flagella.
A) sperm B) intestine lining C) uterine tube lining D) stomach lining E) respiratory tract lining
Anatomy & Physiology
Lymphocytes that attack foreign cells or body cells infected with viruses are ________.
A) suppressor T cells. B) B lymphocytes. C) plasma cells. D) cytotoxic T cells. E) helper T cells.
Anatomy & Physiology