Blog

The withdrawal reflex is initiated by activation of what type of receptor?

True or false: ATP is directly required to cause both a graded potential and an action potential. (0.5 pts.)

Fred is 80 years old and experienced a mild stroke. Subsequently, he became prone to dehydration because he very rarely felt thirsty. This was complicated further by the fact that his body temperature increased rapidly in warm weather and he began urinating very frequently. Which part of the brain would you suspect to be impacted by the stroke?

An inhibitory postsynaptic potential (IPSP) is associated with which of the following?

Is increased heart rate associated with an elevated sympathetic or parasympathetic nervous system activity? 

A cell has a total membrane potential of -70 mV. Cation A is found in both the ECF and ICF and has an equilibrium potential of +45 mV. Cation B is found in both the ECF and ICF and has an equilibrium potential of -85 mV. True or false: The cell membrane is more permeable to Cation B than Cation A. (0.5 pts.)

A cell has a total membrane potential of -70 mV. Cation A is found in both the ECF and ICF and has an equilibrium potential of +45 mV. Cation B is found in both the ECF and ICF and has an equilibrium potential of -85 mV. True or false: The electrical driving force acting on Cation A is out of the cell. (0.5 pts.)

Which of the following equations correctly relates flow, pressure, and resistance?

You’re interviewing a patient who has recently had a stroke. You ask him to state his name and house address. His reply seems to be mostly nonsense sounds, but you make out the words “yesterday morrow soon.” What type of disorder is your patient displaying?

The vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are in the ________.