Fear can cause tachycardia
Indicate whether the statement is true or false
True
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T-lymphocytes in the thymus gland do not participate in the immune response and are protected from antigens by
A. the blood-thymus barrier. B. the low pH of the thymus gland. C. thymic macrophages. D. trabecular fibers. E. circulating B-lymphocytes.
The process of synthesizing an mRNA chain through the use of a DNA molecule is called
A) transcription. B) replication. C) RNA matching. D) differentiation. E) translation.
Sensory pathways can receive information by all of the following except
A) a stimulus altering the permeability of a receptor membrane. B) a change in the flow of ions across the sensory membrane. C) a projection over a labeled line. D) conversion of a stimulus to a change in membrane potential. E) voluntary response.
A mutation occurs that prevents the formation of intercalated disks. Which of the following muscular structures will be directly affected?
A. The heart B. The stomach and intestines C. The tongue D. The legs