Gen Combo Ll Basic Biomechanics; Connect Ac; Maxtraq Software Ac
8th Edition
ISBN: 9781264013876
Author: Hall
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 8, Problem 5IP
INTRODUCTORY PROBLEMS
5. Compare the structure of the knee (including bones, ligaments, and muscles) to the structure of the elbow. What are the relative advantages and disadvantages of the two joint structures?
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Problem 34
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The three main forces that act on the patella are shown on
the diagram of the knee joint below. These forces are the
quadriceps muscle force (FQ), the patella ligament force
(FPL), and the patellofemoral joint reaction force (FPF). The
angles a and ẞ are with respect to a line that is
perpendicular to FPF. Assuming a = 15°, ẞ = 20°, and FQ =
3725 N, use equations for static equilibrium to calculate (a)
FPL, and (b) FPF. (Hint: To solve this problem consider using
a coordinate system that is aligned with the principal axes
of the patella instead of the usual vertical and horizontal
axes). (c) Many people assume FQ and FPL are always equal
in magnitude but this is only true under certain
circumstances. Under what conditions are FQ and FPL equal
in magnitude?
Fo
FPF
FP B
GriffithUNIVERSITY
Queensland Australia
EXERCISE
10
REVIEW SHEET
Joints and Body Movements
Name
Lab Time/Date
Types of Joints
1. Use the key terms to identify the joint types described below.
Key:
cartilaginous
fibrous
synovial
1. typically allow a slight degree of movement
2. include joints between the vertebral bodies and the pubic symphysis
3. essentially immovable joints
4. sutures are the most remembered examples
5. cartilage connects the bony portions
6. have a fibrous articular capsule lined with a synovial membrane surrounding a joint cavity
7. all are freely movable or diarthrotic
8. bone regions are united by fibrous connective tissue
9. include the hip, knee, and elbow joints
2. Match the joint subcategories in column B with their descriptions in column A, and place an asterisk (*) beside all
choices that are examples of synovial joints. (Some terms may be used more than once.)
Column A
Column B
1. joint between most skull bones
ball-and-socket
2. joint between the axis and atlas
condylar
3. hip joint
plane
4.…
Chapter 8 Solutions
Gen Combo Ll Basic Biomechanics; Connect Ac; Maxtraq Software Ac
Ch. 8 - INTRODUCTORY PROBLEMS 1. Construct a chart listing...Ch. 8 - INTRODUCTORY PROBLEMS 2. Construct a chart listing...Ch. 8 - INTRODUCTORY PROBLEMS 3. Construct a chart listing...Ch. 8 - INTRODUCTORY PROBLEMS 4. Compare the structure of...Ch. 8 - INTRODUCTORY PROBLEMS 5. Compare the structure of...Ch. 8 - INTRODUCTORY PROBLEMS 6. Describe sequentially the...Ch. 8 - INTRODUCTORY PROBLEMS 7. Describe sequentially the...Ch. 8 - INTRODUCTORY PROBLEMS 8. Describe sequentially the...Ch. 8 - 9. Use the diagram in Sample Problem 8.1 as a...Ch. 8 - Prob. 10IP
Ch. 8 - ADDITIONAL PROBLEMS 1. Explain the roles of...Ch. 8 - ADDITIONAL PROBLEMS 2. Explain the sequencing of...Ch. 8 - Prob. 3APCh. 8 - ADDITIONAL PROBLEMS 4. Which muscles of the lower...Ch. 8 - ADDITIONAL PROBLEMS 5. The squat exercise with a...Ch. 8 - ADDITIONAL PROBLEMS 6. Explain why compression at...Ch. 8 - Prob. 7APCh. 8 - ADDITIONAL PROBLEMS 8. Explain why lifting a heavy...Ch. 8 - ADDITIONAL PROBLEMS 9. Explain how excessive...Ch. 8 - Prob. 10AP
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- I. INSTRUCTION: Compute for the following given problem. 1. Emily can lift 21 kg (210 newtons force) using muscles that have a cross-sectional area of 6 cm2. Use this formula to work out how many newtons per square centimetre her muscles can pull with: Formula: Force/Areaarrow_forward5 of 10 Which of the following exercises would be an example of a Stabilization-Focused exercise for the shoulders? Standing cable row Bench press Single-leg dumbell overhead press shoulder press machine Next ▶arrow_forwardThe adjacent diagram displays the joint reaction force between the acetabulum and femoral head for the right leg during single leg stance. Also shown are the abductor muscle force (AMF), the weight of the body above the level of the stance hip (W) and their corresponding moment arms with respect to the joint centre (D and D1). If the right leg weighs 1/6 of total body weight, the ratio of D1 to D is 2.4, and AMF is angled at 30 degrees relative to the vertical, calculate the: Abductor muscle force (2 marks). Hip joint reaction force (2 marks). Express both answers as multiples of total body weightarrow_forward
- 30³ V F2 ● 3 E CALF RAISES 80 F3 Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as calf raises: MEDICINE BALL OVER/UNDER Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as over and under: STRETCH BAND LATERAL RAISES 6,884 Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as lateral raise: DUMBBELL FRONT SQUAT DEC 6 $ 4 a D F4 A % 5 G F5 W 0 F6 MacBook Air * 6 188880BA 7 F7 3 F8 P ( 9 F9arrow_forwardExercise 3: Directional Terminology (Q005) Which bone is POSTERIOR to the sternum? Pelvis Femur O Thoracic Vertebrae Sacrum Mandiblearrow_forwardProblem 22arrow_forward
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