Ventricles in the brain allow for the circulation of ________ throughout the brain.
A. blood
B. cerebrospinal fluid
C. lymph fluid
D. nutrients
Answer: B
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Which of the following is not true of acetylcholine?
A) It binds to receptor membrane channels. B) It diffuses across the synaptic cleft. C) It is stored in the neuron in vesicles. D) It enters the muscle fiber to release calcium form the sarcoplasmic reticulum. E) It is digested by acetylcholinesterase.
An X-shaped structure inferior to the hypothalamus, called the optic __________, is the point where some fibers from the right eye cross over to the left brain.
Fill in the blank(s) with the appropriate word(s).
The cardiac pacemaker cells are located in which of the following?
A) Purkinje fibers B) SA node C) AV node D) bundle branches E) bundle of His
When using the Benedict's assay, which color would indicate the most reducing sugar present?
A) reddish brown B) orange C) blue D) green