BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 7, Problem 3IP
Summary Introduction
To construct: Chart listing all muscles crossing the wrist joint according to whether they are medial, lateral, anterior, or posterior to the joint center and identify the actions performed by the muscles listed in the four categories.
Concept introduction: Muscles are soft tissues. Muscles are classified as skeletal muscle, cardiac muscle, and smooth muscle. Skeletal muscles contract and relax with the bones and they help in locomotion, gait and respiration. The articulating connection also known as the joint is the connection between two bones that help both the bones to perform the same function in synchronized fashion.
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Explain the following terms describing muscles in not more than 1-2 lines. Examples are not required.
origin
insertion
tendon
belly
raphe
aponeurosis
Identify the joint actions caused by the concentric contractions of the following muscles. Check all appropriate boxes.
Identify the muscles related to each action noted below:
e. taking a deep breath: respiratory diaphragm, external intercostals
pointing your toes downward:
keeping your seat when riding a horse:
in running, the actions at the hip joint:
touching your chin to your chest:
shrugging your shoulders:
in standing on your heels, the action at the ankle joint:
nodding your head to signify "no":
gripping a knife:
in kicking a football, the actions at the knee joint:
closing your jaw, as in chewing
placing your palms in the anatomical position:
bringing your arm straight back at the shoulder joint, as in swimming:
moving your thigh laterally to take the "at ease" stance:
doing sit-ups to tighten your abdomen:
hunching your shoulders:
doing Kegel exercises to strengthen the pelvic floor:
bracing your arms when falling forward:
dropping your shoulders:
while sitting cross-legged, turn the soles of your feet to face each other, the action of turning the soles of your feet to touch each other and…
Chapter 7 Solutions
BASIC BIOMECHANICS
Ch. 7 - Construct a chart listing all muscles crossing the...Ch. 7 - Prob. 2IPCh. 7 - Prob. 3IPCh. 7 - INTRODUCTORY PROBLEMS 4. List the muscles that...Ch. 7 - INTRODUCTORY PROBLEMS 5. List the muscles used as...Ch. 7 - INTRODUCTORY PROBLEMS 6. Explain how the use of an...Ch. 7 - INTRODUCTORY PROBLEMS 7. Select a familiar...Ch. 7 - 8. Using the diagram in Sample Problem 7.1 as a...Ch. 7 - 10. Solve Sample Problem 7.2 with the addition of...Ch. 7 - Identify the sequence of movements that occur at...
Ch. 7 - Which muscles are most likely to serve as agonists...Ch. 7 - Prob. 3APCh. 7 - ADDITIONAL PROBLEMS 4. Which muscles are most...Ch. 7 - Prob. 5APCh. 7 - Prob. 6APCh. 7 - 8. How much tension (Fm) must be supplied by the...Ch. 7 - 9. What is the length of the moment arm between...Ch. 7 - Prob. 10AP
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- Identify four muscles that have an action in both the hip and knee. Write the specific action of each muscle at both joints in the space provided.arrow_forwardLocate and list two different pairs of muscles that act as on the body as agonist/antagonist. (That is, in each pair, one muscle will produce a movement, such as flexion, that the other muscle will undo, and produce extension; abduction/adduction, etc. are other ways that muscle produce opposite actions on the same part of the body).Name two muscles that act as “fixators.” (What are fixators?) What joint or joints are they helping to stabilize?Why is the biceps brachii called a “bicep,” while the triceps brachii is called a “triceps?”What is the difference between a muscle with “longus” as part of its name and a muscle with “brevis” as a part of its name?arrow_forwardWhat muscles are being used in this picture? (hint: there are quite a few – write down each joint movement and the muscles that are responsible)arrow_forward
- Muscles work in groups when they perform multifaceted movements. Write the anatomical term that describes the muscle of a compartment that performs the following action. 1. M uscle that is opposing an action 2. Muscle that stabilizes the origin of a prime mover 3. Small muscle that aids prime mover 4. Prime mover. Muscle that is causing an actionarrow_forwardList each muscle name or muscle combination/group name only once in the table below.arrow_forwardIdentify the muscles that are involved in the following movements: Knee Extension Knee Flexsion Knee Fytenarrow_forward
- List the three types of the muscles and describe the characteristics of each. Please avoid plagiarismarrow_forwardIdentify the joint actions caused by the concentric contractions of the following muscles. Check appropriate columns. You might have to check off more than one box per muscle:arrow_forwardSeveral criteria were given for the naming of muscles. Match the muscle names (column B) to the criteria (column A). Note that more than one muscle may fit the criterion in some cases Column A action of the muscle 2 shape of the muscle 3 location of the origin and/or insertion of the muscle 4 number of origins 5 location of the muscle relative to a bone or body region 6 direction in which the muscle fibers run relative to some imaginary line 7 relative size of the muscle Column B abdominis transversus biceps brachiideltoid erector spinaeexternal intercostalsflexor digitorum superficialis pectoralis majorrectus abdominisarrow_forward
- For each joint, fill in the actions(movements) done for each one. Explain each action For the second part, you are to list the muscle group that performs that action. Some will be a group of muscles, and others will be a single large muscle.arrow_forward1) Describe the different criteria that contribute to how skeletal muscles are named. For example you can use the names of the muscles below to predict their location, action or appearance: Abdominal external oblique, Trapezius, Flexor carpi ulnaris, Gastrocnemius 2) Describe the muscles of the anterior abdominal wall. 3) Why are the muscles of the face different from typical skeletal muscle?arrow_forwardIdentify a muscle that everts the foot and two muscles of either the hand or foot that are considered to be intrinsic muscles of that structure. Be sure to state clearly which muscle everts and which muscles are intrinsic.arrow_forward
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