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NUR 1114 MSK Practice Test Study Guide, Exams of Nursing

Chamberlain College of NursingNursing

NUR 1114 MSK Practice Test Study Guide

Typology: Exams

2024/2025

Available from 12/19/2024

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NUR1114 MSK Practice Test Study
Guide
Name this muscle and its action - Answer Orbicularis oculi
Closes the eyes
Origin and insertion of orbicularis oculi - Answer Origin: Medial margin of orbit
Insertion: Skin around eyelids
Name this muscle and its action - Answer Orbicularis oris
Closes the lips
Origin and insertion of orbicularis oris - Answer Origin: Maxilla and mandible
Insertion: Skin at corner of the mouth
Name this muscle and action - Answer Buccinator
Compresses the cheek and allow sucking
Origin and insertion of buccinator - Answer Origin: maxilla and mandible
Insertion: fibres of orbicularis oris
Name this muscle and action - Answer Masseter
Elevates the mandible
Origin and insertion of masseter - Answer Origin: zygomatic arch
Insertion: mandible
Name and action of this muscle - Answer Temporalis
Elevates and retracts the mandible
Origin and insertion of temporalis - Answer Origin: temporal bone
Insertion: mandible
Name and action of this muscle - Answer Sternocleidomastoid
When both left and right sternocleidomastoid muscles contract, the neck flexes. When
the left muscle contracts, the head rotates to the right and vice versa
Origin and insertion of sternocleidomastoid - Answer Origin: sternum and sternal end of
clavicle
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NUR1114 MSK Practice Test Study

Guide

Name this muscle and its action - Answer Orbicularis oculi Closes the eyes Origin and insertion of orbicularis oculi - Answer Origin: Medial margin of orbit Insertion: Skin around eyelids Name this muscle and its action - Answer Orbicularis oris Closes the lips Origin and insertion of orbicularis oris - Answer Origin: Maxilla and mandible Insertion: Skin at corner of the mouth Name this muscle and action - Answer Buccinator Compresses the cheek and allow sucking Origin and insertion of buccinator - Answer Origin: maxilla and mandible Insertion: fibres of orbicularis oris Name this muscle and action - Answer Masseter Elevates the mandible Origin and insertion of masseter - Answer Origin: zygomatic arch Insertion: mandible Name and action of this muscle - Answer Temporalis Elevates and retracts the mandible Origin and insertion of temporalis - Answer Origin: temporal bone Insertion: mandible Name and action of this muscle - Answer Sternocleidomastoid When both left and right sternocleidomastoid muscles contract, the neck flexes. When the left muscle contracts, the head rotates to the right and vice versa Origin and insertion of sternocleidomastoid - Answer Origin: sternum and sternal end of clavicle

Insertion: mastoid process of temporal bone Name and action of this muscle - Answer Trapezius Elevation, depression, retraction, and rotation of the scapula. Extension of the neck Origin and insertion of trapezius - Answer Origin: occipital bone, cervical and thoracic vertebrae Insertion: clavicle, acromion and spine of scapula Origin, insertion and action of external intercostal muscles - Answer Origin: inferior border of rib above Insertion: superior border of rib below When the muscles contract, the ribs are elevated. Increases the volume of the thorax. Origin, insertion and action of internal incostal muscles - Answer Origin: superior border of rib below Insertion: inferior border of rib above When the mucles contract, the ribs are depressed. Reduces the volume of the thorax. Name and action of this muscle - Answer Diaphragm When breath in, the diaphragm contracts and "flatten". This lowers the diaphragm, leads to an increase the volume the thorax, and decrease in the lungs. Origin and insertion of diaphragm - Answer Origin: attached to the xiphoid process, the lower ribs and the first lumbar vertebra Insertion: a central tendon Name this muscle and action - Answer Rectus abdominis When the muscle contracts, the vertebral column, along with the trunk is flexed Origin and insertion of rectus abdominis - Answer Origin: superior surface of pubic bone Insertion: xiphoid process of the sternum, costal cartilage of ribs 5- What is this and what is its purpose? - Answer Linea alba (white line) A tendinous seam runs from xiphoid process to pubic symphysis and connects the right and left rectus abdominis muscles What is this? - Answer Frontal bone What is this? - Answer Parietal bone