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Unit 3 Chapter 10
Assignment
| Question | Answer |
|---|---|
| The skeletal muscles are innervated by _________blank. | spinal nerves and cranial nerves |
| What is a retinaculum? | A band of connective tissue that covers and stabilizes a group of tendons. |
| What is the action of the orbicularis oris? | Closes and protrudes lips as in kissing |
| Which term refers to a muscle that prevents a bone from moving during an action? | Fixator |
| Contraction of the left sternocleidomastoid causes the head to turn toward the right. What type of movement is this? | Contralateral |
| What is the primary action of the masseter? | Elevation of the mandible |
| What is the distal attachment of all three heads of the triceps brachii? | Olecranon |
| The action for the vastus lateralis muscle is to _________blank the knee. | extend |
| Muscles that dorsiflex the foot are found in which compartment of the leg? | Anterior |
| A young thoracic surgery resident performing an operation for esophageal cancer accidentally severs the patient's left phrenic nerve. Predict the effect of this accident on the patient's respiration. | Normal, involuntary inhalation will become labored. |
| Which of the following extensors of the head is the most superficial? | Trapezius |
| The aponeurosis of the external oblique forms the _________blank at its inferior margin. | inguinal ligament |
| While sitting at your desk, you drop your pencil onto the floor. You bend over to pick up the pencil. In order to straighten up and continue your exam you must use which of the following muscles? | Erector spinae |
| In lifting a heavy weight from the floor, one should use the power of the _________blank in order to avoid straining the lower back. | knee and hip extensors |
| The muscles that laterally rotate and depress the scapula, as in shrugging and lowering the shoulders, are the _________ | trapezius and serratus anterior |
| A baseball pitcher who injures one of their SITS muscles most commonly sustains tears to the tendon of which muscle? | Supraspinatus |
| Which of the following is true regarding the levator scapulae? | It flexes the neck if the scapula is fixed. |
| What is the longest muscle in the human body? | Sartorius |
| At the sound a starting gun, a swimmer propels forward from the starting block and immediately in pain, grabbing the back of thigh. Within 48 hrs they begin to notice extensive bruising on the back of their thigh and knee. Which muscle is likely injured? | Biceps femoris |
| Which of the following muscles adducts and medially rotates the thigh? Gracilis Piriformis Adductor magnus Rectus femoris Sartorius | Adductor magnus |
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