Through which valve must blood pass as it moves from the right atrium to the right ventricle?
A. Right atrioventricular
B. Pulmonary
C. Aortic
D. Venous
Answer: A. Right atrioventricular
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Which of the labeled structures in the diagram is the thalamus?
a) A b) B c) C d) D e) E
A patient appears in a clinic complaining of irritability and chronic sweatiness
He also has a lump in his neck near his larynx. Blood tests show he has low levels of thyroid-stimulating hormone (TSH) in his plasma. Which of the following is the most likely diagnosis? A. primary hypothyroidism B. an iodine-insufficient diet C. secondary hypothyroidism D. hyposecretion of TRH E. Graves' disease
Which of the following is not a feature of skeletal muscle?
A. Autorhythmicity B. Excitability C. Extensibility D. Conductivity E. Contractility
The scrotal location of the testes provides the cooler environment essential for spermatogenesis
Indicate whether the statement is true or false