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Exam (elaborations)

AP 1 101 Module 5 Exam Questions and Excellently Graded Answers Guaranteed 100 % Pass

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  • Course
  • Human anatomy and physiology
  • Institution
  • Human Anatomy And Physiology

A motor signal is a signal that is sent from a muscle to the central nervous system. - CORRECT ANSWER -false, that is sensory input A person sustained a back injury to the muscle group closest to the spine. What muscle group was injured? - CORRECT ANSWER -Spinalis Acetylcholine is what type...

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  • August 14, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Human anatomy and physiology
  • Human anatomy and physiology
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Eddiestudy
AP 1 101 Module 5 Exam Questions and Excellently

Graded Answers Guaranteed 100 % Pass
A motor signal is a signal that is sent from a muscle to the central nervous system. - CORRECT

ANSWER ✔✔ -false, that is sensory input


A person sustained a back injury to the muscle group closest to the spine. What muscle group

was injured? - CORRECT ANSWER ✔✔ -Spinalis


Acetylcholine is what type of substance? - CORRECT ANSWER ✔✔ -neurotransmitter


cardiac and smooth muscle tissue are both under involuntary control - CORRECT ANSWER

✔✔ -true


Contraction of (muscle) results in hip flexion - CORRECT ANSWER ✔✔ -iliacus


Describe how acetylcholine, sodium ions and calcium ions work together to enable a muscle

contraction. - CORRECT ANSWER ✔✔ -Acetylcholine is released from a motor nerve at the

neuromuscular junction. Once there, it binds with receptors on the muscle fiber that cause

sodium ions to be released inside the cell. This causes an action potential which reaches the

sarcoplasmic recticulum. The sodium ions cause calcium ions to be released from to

sarcoplasmic recticulum. The calcium ions cause the muscle contraction. The myosin heads grab

the actin and pull them along causing a contraction.

During a muscle contraction which protein myofilament contains cross-bridges? - CORRECT

ANSWER ✔✔ -myosin

, External oblique - CORRECT ANSWER ✔✔ -fibers run down and forward


origin= sternum, ribs 5-12

insertion= linea alba, iliac crest

action= flexion of the spine, compress abdomen

flexes trunk to same side, rotates to opposite side

innervation: lower intercostal, ilioinguinal nerves


flexor digitorum superficialis action and innervation - CORRECT ANSWER ✔✔ -flexion of

wrist and digits 2-5, median nerve


Iliocostalis - CORRECT ANSWER ✔✔ -iliocostalis lumborum, iliocostalis thoracis, iliocostalis

cervicis

Action= spine extension


Internal oblique - CORRECT ANSWER ✔✔ -fibers run upward and forward


origin= iliac crest, lumbodorsal fascia

insertion= inferior ribs, linea alba

action= compresses abdomen, depresses ribs, flexes spine, rotates spine to same side

innervation= lower intercostal, ilioinguinal nerves


Longissimus Cervicis - CORRECT ANSWER ✔✔ -Origin = transverse processes of superior

thoracic vertebrae

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