The intrapleural pressure is negative to maintain lung inflation
Indicate whether the statement is true or false
T
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Explain the function of sodium-potassium ion pumps
A) They generate ATP for the cell during the electron transport chain when hydrogen ions move in a process known as chemiosmosis. B) The sodium-potassium ion pump binds acetylcholine across the synaptic cleft to generate an action potential at the sarcolemma. C) The sodium-potassium ion pump allows facilitated diffusion of potassium during the repolarization of a muscle cell. D) The sodium-potassium ion pump allows facilitated diffusion of sodium during the depolarization of a muscle cell. E) The sodium-potassium ion pump maintains the resting membrane potential of a cell by exporting three sodium ions out in exchange for two potassium ions entering the cell.
In the following superior illustration of the interior of the base of the skull, the arrow points to which of the following cranial nerves?
A) olfactory B) oculomotor C) trochlear D) maxillary E) abducent
Approximately 80% of a muscle fiber's volume are the myofibrils. This characteristic reflects muscles ability to ________
A) store oxygen molecules that can be used in aerobic respiration B) produce relatively high amounts of ATP C) produce movement through contractile force D) generate and propagate action potential
Which of the following features can be found on the humerus, radius, and femur?
A. Styloid process B. Head C. Condyles D. Neck