2nd sem: Spinal reflexes/nerves/muscle tone

Question 1

GSA/GSS carry what kind of impulses?

Answer 1

carry exteroceptive information [sensory endings: proprioception sa muscle, tendons, joints]

Question 2

What receptors are associated with GSA/GSS?

Answer 2

receptors that mediate pain, touch, temperature

Question 3

GSE/GSM carry impulses from _______ in lamina XI of spinal cord

Answer 3

motor fibers from cell bodies (alpha, beta, gamma motor neurons) in

Question 4

GVA/GVS [Visceral-Afferent & Visceral-Sensory] carry sensory impulses from

Answer 4

receptors in visceral structures [within body cavities: smooth & cardiac muscles and glands]

Question 5

_____ consists of pre-ganglionic and post-ganglionic autonomic fibers. It innervates smooth & cardiac muscles. also, regulated glandular secretion.

Answer 5

GVE/GVM [General visceral efferent/General visceral motor]

Question 6

It involves 2 neurons only.

1 afferent: 1 efferent

Answer 6

MONOsynaptic [ex. deep tendon reflex: knee jerk]

Question 7

It involves MORE than 2 neurons involved.

Answer 7

POLYsynaptic [ex. Flexor - crossed extensor reflex]

Question 8

NAME ALL PAIN RECEPTORS! GO!

Answer 8

PSYCH! ISA LANG SIYA.

capsulated free nerve endings. CAPSULATED YAN.

Question 9

NAME ALL TOUCH RECEPTORS! HAZZAH!

Answer 9

Merkel’s tactile discs
Meissner’s corpuscle
Hair follicle nerve endings
[Miss Mo na Hawakan?]

Question 10

GREAT JOB! NAME ALL PRESSURE RECEPTORS! GO!

Answer 10

Pacinian corpuscle
Golgi mazzoni corpuscles
[Parental Guidance is adviced? ka-Pressure naman.]

Question 11

NAME ALL TEMPERATURE RECEPTORS! kaya mo yan!

Answer 11

Krausse end bulb (santa krausse -> galing north pole -> malamig) for cold temp
Rufinni’s corpuscle (roofie drugs -> date drug -> pampainit ng katawan) for hot temp

Question 12

Single action potentials from Meissner’s corpuscle, Pacinian corpuscle and Ruffini ending afferents are directly linked _________.

Answer 12

to muscle activation

Question 13

GREAT! NAME ALL STRECTH RECEPTORS! GOOO!

Answer 13

Muscle spindles

Tendon spindles

Question 14

QUICK! what spinal reflex would lead to LOCALIZED vasoconstriction when there is ice applied on the skin?

Answer 14

Somato-Visceral Spinal Reflex [SV]
receptor na involved: si santa KRAUSSE (somatic)
effector: contraction ng smooth muscle of wllas of bloo vessels [Visceral]

GANYAN DAPAT SUMAGOT. WOW

Question 15

How about the spinal reflex activated for inflammation of the APPENDIX followed by CONTRACTION of the abdominal muscles?

Answer 15

dami ng clues diba.. Visceral-Somatic spinal reflex [VS]
ano ba location of sensory nerve ending: sa APPENDIX (visceral)
location nung motor ending: abdominal muscle (somatic)

Question 16

Paano kapag iihi ka or tatae ka? ano spinal reflex yun?

Answer 16

VISCERO-VISCERAL spinal reflex [VV]
NAIIHI KA NA BA? bladder filling (visceral) -> contraction of detrussor muscles (visceral)
DEFACATION! distention of rectum/stimulation of rectal muscosa (visceral) -> causes contraction of rectal musculature (visceral)

Question 17

ang muscle reflex/myotatic reflex ba ay controlled ng higher control center? Contraction of a muscle in response to a stretch.

Answer 17

NO. kasi hanggang sa spinal cord lang siya.

Question 18

components of intrafusal fiber?

Answer 18

nuclear bag and chain

Question 19

Where is the nuclear bag attached?

Answer 19

it extends beyond the capsule at each end, to be attached to the endomysium of extrafusal fibers

Question 20

Annulospiral Endings

Answer 20

at EQUATOR of intrafusal fibers
LARGE, myelinated, pierces through the capsule, lose its myelin sheath
naked axons LOOPS SPIRALLY around nuclear bag or chain

Question 21

Flower spray endings

Answer 21

sa CLEAR chain fibers AWAY from equator
SMALLER, myelinated, pierces through capsule, lsoe myelin sheath
naked axons branches, ending in VARICOSITIES
associated with NUCLEAR CHAIN fibers lang

Question 22

Extrafusal fibers: alpha 1 motor fibers

Intrafusal fibers: ____

Answer 22

gamma motor fibers

Question 23

What happens to the muscle when the golgi tendon organ is stimulated?

Answer 23

muscle relaxation dahil sa reflex inhibition

Question 24

What innervates the fusiform capsule that contains slender cellular intrafusal fibers?

Answer 24

Group 1b (beta) fibers with bulbous terminals

Question 25

nerves + neuron = ______

Answer 25

ganglion

Question 26

neurons + fibers = ______

Answer 26

plexus

Question 27

somatic motor: conscious

visceral motor: ________

Answer 27

unconscious

Question 28

Regarding plantar reflex, what does it indicated when you have a POSITIVE Babinski reflex result?

Answer 28

Upper motor neuron lesion [absence of descending inhibition]

Question 29

What reflex is stimulated when you have goosebumps?

Answer 29

somatic-visceral reflex [SV]

receptor: Kapag nilalamig ka -> cold temp -> santa KRAUSSE (somatic)
effector: contraction of erector pili muscle (visceral)

Question 30

Paano kapag may peptic ulcer ka tapos nag contract abdominal muscle mo?

Answer 30

viscero-somatic spinal reflex [VS]
again, locations of sensory nerve ending: visceral organ (visceral)
location motor nerve ending: abdominal muscle (somatic)