![]() ![]() ![]() Since Facial nerve also does some taste it comes closely following the facial nerve.ĬN X or 10: Vagus (the party starts at 10pm in vegas! Vagus is a huge nerve so it does both motor and sensory).ĬN XI or 11: Spinal Accessory: We saw this nerve innervating spinal muscles and its similar to spinal (not cranial) nerves so it must be motor only and lower ranked on the stem.ĬN XII or 12: Hypoglossal: Tongue muscle nerve gets to be the last in the chain! It is just tongue muscles so motor only. Abducens (we are back in order! “I soT for lArs” second part of this phrase l and r stand for the muscle lateral rectus which the abducens nerve controls)ĬN VII or 7: Facial: (CN 7 lucky number 7 is the nerve that gets to show facial expression of surprise when winning a jackpot! Important nerve does both sensory and motorĬN VIII or 8: Vestibulocochlear (CN 8 travels with 7 so it must come right after in sequence does cochlear = hearing vestibular = balance so only sensoryĬN IX or 9: Glossopharyngeal (DONT MIX UP WITH CN XII HYPOGLOSSAL WHICH IS MOTOR ONLY this tongue nerve (glosso=tongue) does both taste AND motor. Trigeminal (The trigeminal nerve is an exception to the first nerves being only eye nerves but it does all the sensation of your face and has 3 parts CNVa (occipital), CNVb (maxillary), CNVc (mandibular) Part Vb and Vc also do motor so CN5 is BOTH sensory and motor!ĬN VI or 6. Trochlear (“I soT for lArs” Superior oblique eye movement (covered later) by Trochlear SOT is first part of mnemonic so trochlear is CN IV: does ONLY MOVEMENT via superior oblique for EYES motor)ĬN V or 5. Oculomotor (eye muscles are most inward so it is CN III does ONLY MOVEMENT EYES motor)ĬN IV or 4. Optic (eyes stick out second farthest so it is CN II does ONLY VISION sensory)ĬN III or 3. ![]() This will cause the flexion of the fetal head onto the. The atrium contract ahead of ventricular contraction, and the duration of atrial systole is 0.1 s. The total duration of the cardiac cycle includes systole and diastole. Flexion: As the vertex descends into the maternal pelvis, it will encounter resistance from the maternal pelvic floor muscles. When the heart beats at the normal rate of 75 beats/min, the duration of each cardiac cycle is 0.8 s ( Fig. Olfactory (nose sticks out farthest so it is CN I does ONLY SMELL sensory)ĬN II or 2. Descent: This cardinal movement will usually happen concomitant with engagement, and is typically documented late in the active phase of the first stage of labor. “Oh Oh Oh To Touch And Feel A Girls Very Soft Hands” or try Trend finding for memorization where you assume that nerves of eyes come first + more important nerves are both sensory and motor (others are just sensory or just motor)ĬN I or 1. Use a mnemonic (it’s not as difficult as they make it out to be the tough part during medical school is memorizing their “route” which is similar to being asked to memorize map quest directions) ![]()
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