MTSA Advanced Physiology Test 2 Questions With Correct Answers

MTSA /




Advanced
/ /




Physiology
/ /




Test 2 Questions With Correct Answers
/ // // // // //




2/
/major /


/divisions //of //the //nervous //system //- //CORRECT //ANSWERS(S)✔✔central //and //peripheral




components /
/of //the //central //nervous //system //- //CORRECT //ANSWERS(S)✔✔brain //and //spinal //cord




components /
/of /


/peripheral /


/nervous //system //- //CORRECT //ANSWERS(S)✔✔cranial //nerves, //spinal //nerves, //ganglia




number //of //cranial //nerves //- //CORRECT //ANSWERS(S)✔✔12 //pairs



number //of //spinal //nerves //- //CORRECT //ANSWERS(S)✔✔31 //pairs



afferent //- //CORRECT //ANSWERS(S)✔✔conveying //toward //a //center



afferent //neurons //- //CORRECT //ANSWERS(S)✔✔sensory //neurons



efferent //- //CORRECT //ANSWERS(S)✔✔conveying //away //from //the //center

,efferent //neurons //- //CORRECT //ANSWERS(S)✔✔motor //neurons



divisions /
/of //the //efferent //nervous //system //- //CORRECT //ANSWERS(S)✔✔somatic //and //autonomic




divisions /
/of /


/autonomic //nervous //system //- //CORRECT //ANSWERS(S)✔✔sympathetic //and //parasympathetic




enclosed /
/and /


/protected //by //boney //structures //- //CORRECT //ANSWERS(S)✔✔CNS //(brain //and //spinal //cord)




somatic /
/nervous /


/system //- /


/CORRECT /


/ANSWERS(S)✔✔the /


/division //of //the //peripheral //nervous //system //that //controls //the //body's //skeletal //muscles




pathway /
/that /


/has /


/preganglionic /


/and //post //ganglionic //neurons //- //CORRECT //ANSWERS(S)✔✔efferent //autonomic




Basic //structural //unit //of //the //nervous //system //- //CORRECT //ANSWERS(S)✔✔neuron



Dendrites //- /
/CORRECT /

,/ANSWERS(S)✔✔a /
/neuron's /


/branching /


/extensions //that //receive //messages //and //conduct //impulses //TOWARD //the //cell //body




how //many //dendrites //- //CORRECT //ANSWERS(S)✔✔0, //1, //or //many



interesting /
/fact /


/about /


/dendrites /


/and /


/conduction //- /


/CORRECT /


/ANSWERS(S)✔✔they /


/have /


/very /


/few //voltage //gated //Na+ //channels //and, //thus, //are //poor //conductors //of //action //potentials




how //dendrites //conduct //impulses //- //CORRECT //ANSWERS(S)✔✔electrotonic //conduction



electrotonic /
/conduction //is.. //- //CORRECT //ANSWERS(S)✔✔conduction //directly //through //the //cytoplasm. //



-allowed //by //cytoplasm //highly //concentrated //with //electrolytes

-conducts //toward //the //axon //hillock

-FAST //d/t //increase //electrolytes //and //increased //size //= //less //resistance //to //flow.



where /
/voltage /


/gated //Na+ //channels //open //in //a //neuron //- //CORRECT //ANSWERS(S)✔✔in //the //axon //hillock //(if


//the //receiving //impulses //are //enough //to //raise //RMP //to //threshold)

, features //of //the //soma //of //a //neuron //- //CORRECT //ANSWERS(S)✔✔-large //diameter

-large //nucleus

-large //nucleolus

-nisal //bodies //(modified //ER)

-large //golgi //apparatus

-LOTs //of //ribosomes

-LOTs //of //mitochondria



major /
/function /


/of //


a/
/neuron /


/(based /


/on //organelles) //- //CORRECT //ANSWERS(S)✔✔protein //synthesis //(making //neurotransmitters)




How /
/many /


/axons /


/does //a //neuron //have? //- //CORRECT //ANSWERS(S)✔✔only //one //(but //may //have //collaterals)




Schwann //cells //- //CORRECT //ANSWERS(S)✔✔produce //myelin //sheath //in //PNS



The /
/gaps /


/between /


/Schwann /


/cells /


/found //at //regular //intervals //in //peripheral //system //neurons //are //called //________. //- //CORRECT


//ANSWERS(S)✔✔Nodes //of //Ranvier