________ is a condition in which there is an excessive buildup of fluid in the pleural space between the parietal and visceral pleura.
A. Pneumothorax
B. Pleural effusion
C. Pulmonary edema
D. Chronic bronchitis
Answer: B
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In response to binding a neurotransmitter, a postsynaptic cell can
A) open chemically gated ion channels, causing graded potentials known as fast synaptic potentials, close ion channels via G proteins and second messenger systems, producing slow responses, and regulate protein synthesis and affect the metabolic activities of the postsynaptic cell. B) only regulate protein synthesis and affect the metabolic activities of the postsynaptic cell. C) open chemically gated ion channels, causing graded potentials known as fast synaptic potentials and regulate protein synthesis and affect the metabolic activities of the postsynaptic cell. D) only open chemically gated ion channels, causing graded potentials known as fast synaptic potentials. E) only close
These veins drain the brain
A) external iliac veins B) internal jugular veins C) internal iliac veins D) external jugular veins
Which vein drains blood from the distal half of the large intestine?
A) superior mesenteric B) splenic C) inferior mesenteric D) gastric
Explain why the Na+ ions diffuse into the neuron when the Na+ channels open.
What will be an ideal response?