What is the basic structural unit of compact bone tissue?
a) osteon
b) stroma
c) lamellae
d) chromosome
e) lacunae
Answer: a
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Urination is triggered by a complex sequence of events called the ________ reflex.
Fill in the blank(s) with the appropriate word(s).
Matching
A) B B) D C) C D) A 1) Monocyte. 2) Lymphocyte. 3) Eosinophil. 4) Neutrophil. 5) A granulocyte, phagocyte and the most common white blood cell found in whole blood. 6) Mounts a humoral immune response by producing antibodies. 7) Releases granules that kill parasitic worms. 8) When activated becomes a macrophage that fights infection. 9) Main bacteria killer during acute infections.
Which of the following valve closings can be auscultated during the "dupp" heart sound by placing the stethoscope at the left sternal border of the second intercostal space?
A) Pulmonary semilunar B) Right atrioventricular (tricuspid) C) Left atrioventricular (mitral) D) Aortic semilunar
The circumflex branch and the anterior interventricular artery are branches of the
A) right coronary artery. B) left coronary artery. C) interventricular artery. D) coronary sinus. E) aorta.