Several nursing students are creating a poster on the mechanism of the heart. What structure would they label as separating the right half of the heart from the left?
A) Auricle
B) Bundle of His
C) Syncytia
D) Septum
D
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The septum is a partition that separates the right and left halves of the heart. The right half receives deoxygenated blood from everywhere in the body and the left half receives oxygenated blood from the lungs. The auricle is an appendage attached to each atrium, which collects blood that is pumped into the ventricles by atrial contractions. Impulses are sent from the atria into the ventricles by way of the bundle of His, which then enters the septum and subdivides into three bundle branches that become a network of fibers that delivers the electrical impulse to the ventricular cells. The myocardium forms two intertwining networks, atrial and ventricular syncytia, which enable first the atria and then the ventricles to contract synchronously when excited by the same stimulus.
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A group of students are preparing for a class exam on skin disorders. As part of their preparation, they are reviewing information about acne vulgaris and its association with increased sebum production
The students demonstrate understanding of the information when they identify which areas as having the highest sebaceous gland activity? Select all answers that apply. A) Face B) Upper chest C) Neck D) Back E) Shoulders