What happens immediately after an action potential reaches the presynaptic membrane at a chemical synapse?
A) A calcium influx triggers the release of neurotransmitters.
B) Neurotransmitters binds to receptors on the postsynaptic neuron.
C) Sodium rushes into the postsynaptic neuron.
D) Sodium rushes out of the presynaptic neuron.
Answer: C
You might also like to view...
What is the correct order for the phases of the uterine cycle, beginning with day 1?
A. Menstrual - proliferative - secretory B. Proliferative - menstrual - secretory C. Proliferative - secretory - menstrual D. Secretory - proliferative - menstrual E. Menstrual - secretory - proliferative
Resistance is calculated as
A. flow divided by pressure B. pressure divided by flow C. pressure divided by volume D. volume divided by flow E. volume divided by pressure
This contractile protein is shaped like a golf club
A) myosin B) troponin C) tropomyosin D) actin
Thyrotropin-releasing hormone targets the ________.
A. posterior pituitary B. thyroid gland C. anterior pituitary D. hypothalamus E. thyroid hormone