超星 - Hollow organs with three-layer - 查题吧

单选题

The tissue foming the impulse-generation and impulse-conduction system of the heart consists primarily of modified

A. motor neurons
B. collagen fibers
C. myelinated axons
D. smooth muscle
E. myocardial fibers

单选题

The one tissue listed below that forms a continuum throughout the cardiovascular system is

A. smooth muscle
B. stratified cuboidal epithelium
C. Purkinje fibers
D. simple squamous epithelium
E. cardiac muscle

单选题

Purkinje fibers are most obvious in histologic sections of which of the following?

Atrioventricular (AV) node
B. Epicardium of the ventricles
C. Interventricular septum
D. Myocardium of atria
E. Sinoatrial (SA) node

单选题

A blood vessel 2 mm in diameter that on histologic examination, is seen to have a distinct internal elastic lamina and a prominent tunica media is most likely which one of the following?

A. Elastic artery
B. Muscular artery
C. Arteriole
D. Pericytic venule
E. Small vein

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