The diameter of bronchioles can change because their walls contain ________.
A. smooth muscle
B. hyaline cartilage
C. elastic cartilage
D. fibrous cartilage
E. skeletal muscle
Answer: A
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Where are Nissl bodies located in a neuron?
A. Soma B. Dendrite C. Myelin sheath D. Telodendria E. Synaptic knobs
The pelvic area is supplied with blood from the ________ arteries.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a primary germ layer in the very early embryo?
a. Ectoderm b. Mesoderm c. Endoderm d. Epidermis
Through which root of a spinal nerve does visceral sensory information arrive?
A) anterior root B) posterior root C) anterior root if the sensory receptors are on the anterior portion of the body and posterior root if the sensory receptors are on the posterior surface of the body D) anterior root if the sensory receptors are superior to the spinal cord and posterior root if the sensory receptors are inferior to the spinal cord E) both anterior root and posterior root can receive visceral sensory information