As urine is formed it flows through the collecting ducts to enter, in order, the following structures
A) minor calyces, renal pelvis, major calyces, ureter
B) minor calyces, major calyces, renal pelvis, ureter
C) major calyces, minor calyces, ureter, renal pelvis
D) renal pelvis, minor calyces, major calyces, ureter
Answer: B
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The bronchial arteries branch from the ________ to supply the lung airways
A) pulmonary arteries B) thoracic aorta C) pulmonary veins D) pleural arteries E) brachiocephalic trunk
Tropomyosin and troponin are often called stimulation proteins because of their role in covering or exposing the binding sites for cross-bridge interaction between actin and myosin
a. True b. False Indicate whether the statement is true or false
Which statement is true regarding action potential propagation?
A) In salutatory conduction, the myelin is composed of fat, which insulates the axon membrane against sodium ion flow across the membrane. B) Continuous propagation results in one graded potential producing multiple action potentials. C) The action potential will die out along the axon if another graded potential does not occur. D) All voltage-gated channels along the axon open at the same time, allowing sodium to flow in simultaneously. E) The active transport of sodium and potassium through sodium-potassium ion pumps causes depolarization of the axon membrane.
Endocrine glands release their hormones into the blood via a duct system.
Answer the following statement true (T) or false (F)