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Anatomy
Muscle System
| Question | Answer |
|---|---|
| The tendons in the body are created by the _____________. | Epimysium |
| Where would one find smooth muscles? | hollow organs of the digestive tract |
| T or F? muscles can only push, not pull | False, they only pull |
| What term best describes the shortening of muscles when they move? A. isotonic B. isometric C. synergy D. irritability | A. isotonic |
| T or F? during contraction, the muscle origin moves toward the insertion | False, insertion moves toward the origin |
| Movement that increases the angle between two bones or parts of the body is termed __________. | Extension |
| The single sheet-like muscle that covers the anterolateral neck is called the : | Platysma |
| The triangle-shaped muscle that sits on top of the shoulder and is the favorite site of injection for small amounts of medication is: | deltoid |
| Which of the following muscles are NOT located in the lower limb? A. sartorius B. tibialis anterior C. rectus femorus D. iliopsoas | D. iliopsoas |
| Which term best describes the muscle that assists the main muscle group or reduces undesirable movements? | synergist |
| Which type of muscle displays a feather pattern? | Pinnate |
| What term best describes a body movement that increases the angle between two bones or parts of the body? | Extension |
| What does the endomysium cover? | a bundle of muscle fibers |
| what is the job of the antagonist? | reverse a particular movement |
| Describe what the fusiform fascicle arrangement would look like? | spindle shaped |
| What two muscles make up the epicranius muscle? | frontalis and occipitalis |
| What is the name of the flat, sheet-like connective tissue that can be found in the abdominal region as well as on the head? | Aponeurosis |
| What are the three types of muscle tissue? | Skeletal , cardiac, smooth |
| What type of muscle tissue has the longest fibers? | skeletal |
| what type of muscle tissue is spiral or figure 8 shaped and has intercalated discs? | Cardiac |
| What type of muscle forces fluids and other substances through internal body channels and is arranged in layers? | Smooth |
| Banding pattern structure, chains of contractile units called sarcomeres: | myofibrils |
| _______ and _________ cause contraction. | myosin and actin |
| the sarcoplasmic reticulum's major role is to store __________ and to release it on demand when the muscle fiber is stimulated to contract. | Calcium |
| The outer covering of the whole muscle is called __________ | epimysium |
| surrounding each bundle of muscle fibers is the __________ | perimysium |
| a wispy sheath of connective tissue that surrounds the individual muscle fiber is the ___________. | endomysium |
| The muscle's _____________(origin/insertion) is attached to the immovable or less movable bone | origin |
| The _______________ moves toward the ____________. (origin/insertion) | Insertion towards the origin |
| Triangular or fan-shaped muscle is called ____________. | convergent |
| ____________ is when muscle is arranged in concentric rings (sphincters) | circular |
| Parallel muscles are usually strap-like or spindle shaped; these muscles may also be called __________. | fusiform |
| ___________ muscles are short and attach obliquely to a central tendon that runs the length of the muscle. | pennate |
| Muscles can shorten as much as ____% of their resting length but it is the number of fibers that determine its power. | 70% |
Created by:
taylos84
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