Sex chromosomes of a normal male are ________
A) XX
B) XY
C) YY
D) any of these, depending on the father
B
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An older woman complains of shortness of breath and intermittent fainting spells. Her doctor runs various tests and finds that the atrioventricular (AV) node is not functioning properly. What is the suggested treatment?
What will be an ideal response
What does the footplate of the stapes cover?
A. The auditory canal B. The auditory tube C. The oval window D. The round window E. The crista ampullaris
What is the correct path of an electrical excitation from the pacemaker to a cardiomyocyte in the left ventricle (LV)?
A. Atrioventricular (AV) node ? subendocardial conducting network ? atrioventricular (AV) bundle ? sinoatrial (SA) node ? cardiomyocyte in LV B. Sinoatrial (SA) node ? atrioventricular (AV) node ? atrioventricular (AV) bundle ? subendocardial conducting network ? cardiomyocyte in LV C. Sinoatrial (SA) node ? atrioventricular (AV) node ? subendocardial conducting network ? atrioventricular (AV) bundle ? cardiomyocyte in LV D. Sinoatrial (SA) node ? atrioventricular (AV) bundle ? atrioventricular (AV) node ? subendocardial conducting network ? cardiomyocyte in LV E. Atrioventricular (AV) node ? sinoatrial (SA) node ? atrioventricular (AV) bundle ? subendocardial conducting network ? cardiomyocyte in LV
What is the site of long bone growth?
A. endosteum B. epiphyseal plate C. medullary cavity D. periosteum E. diaphysis