Each thin filament consists of
What will be an ideal response?
two actin protein strands coiled helically around each other.
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Which of the following applies to postganglionic neurons of the ANS sympathetic division?
A) Some fibers do not synapse until the collateral ganglia. B) Their cell bodies are situated in the lateral gray horns of the spinal cord. C) Their cell bodies are located between spinal segments T1 and L2. D) Their axons synapse with the peripheral effector organs. E) Their axons emerge along the ventral roots of the spinal cord between segments T1 and L2.
Discuss how botulinum toxin can be used beneficially
What will be an ideal response?
The rapidly depolarizing cells, called pacemaker cells, are found in the ________, which is embedded in the posterior wall of the right atrium.
A) right bundle branch B) AV node C) left bundle branch D) intermodal pathways E) SA node
The same chemical messenger may be either a hormone or a neurotransmitter, depending on its source and mode of delivery to the target tissue
Indicate whether the statement is true or false