Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 43, Problem 10TYK
Summary Introduction
Introduction:
The movement in a joint is caused mainly due to the agonist movement of the muscle. The agonist movement is the major force behind the contraction of the muscles and thus completing the movement.
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Which of the following statements about movement and locomotion isfalse?a. Terrestrial animals and flying animals expend energy to provide lift.b. Swimming animals expend energy to provide thrust but not lift.c. Flexors and extensors are examples of muscles called agonists.d. Flexors cause bending at a joint.e. Extensors cause straightening of a limb.
Utilize the attached picture. She leads with her right leg.
A. What motion is occurring in the left knee from A to B?
B. What muscles are acting on the right knee from A to B?
C. How is the knee musculature acting on the left knee from B to C?
D. What plane of of motion is the exercise occurring in (lower extremity only)?
E. What muscles are acting on the left knee joint from A to B?
F. How is the right ankle musculature acting from A to B?
Think about a patient seated in a wheelchair (paraplegic) who must use his/her upper extremities to press down to lift his/her body from a seated position to transfer. What muscles would be involved in this movement (pressing down onto the support surface to lift the body, NOT the full transfer) for the patient to safely lift and support his/her body weight during the movement?
Chapter 43 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 43.1 - Prob. 1SBCh. 43.1 - Prob. 2SBCh. 43.1 - Prob. 3SBCh. 43.2 - Prob. 1SBCh. 43.2 - Prob. 2SBCh. 43.3 - Prob. 1SBCh. 43.3 - Prob. 2SBCh. 43 - Prob. 1TYKCh. 43 - Prob. 2TYKCh. 43 - Prob. 3TYK
Ch. 43 - Prob. 4TYKCh. 43 - Prob. 5TYKCh. 43 - Prob. 6TYKCh. 43 - Which of the following is not an example of a...Ch. 43 - Endoskeletons: a. protect internal organs and...Ch. 43 - Prob. 9TYKCh. 43 - Prob. 10TYKCh. 43 - Prob. 11TYKCh. 43 - Prob. 12TYKCh. 43 - Prob. 13TYKCh. 43 - Prob. 14TYKCh. 43 - Prob. 15TYKCh. 43 - Prob. 1ITDCh. 43 - Prob. 2ITDCh. 43 - Prob. 3ITDCh. 43 - Prob. 4ITD
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- When a person dies, the body often experiences rigor mortis. In this condition, it is as if the muscles have become inflexible and it is very difficult to manipulate gather joints. Why does this occur?arrow_forwardWhenever the position of a joint is stabilized at a certain attitude, the nervous system produces this by :- a- increasing the α-motor neuron discharge to all muscles attached to the jointb- increasing the γ-motor neuron discharge to all muscles attached to the jointc- increasing γ-motor neuron discharge to postural musclesd- co-activation of α and γ-motor neurons innervating the involved musclesarrow_forwardThe names of the muscles can indicate all of the following, EXCEPT ___________. a.myofibril numbers of the muscle b.the direction of the muscle relative to the long axis of the body c.action of the muscle d.the region of the body where the muscle is located 2. An exocrine gland that loses small parts of its cell bodies during secretion, as is the case for the mammary gland, is further classified as a ____________ gland. a.Endocrine b.Merocrine c.Holocrine d.Apocrinearrow_forward
- Most of the muscles of the skeleton are attached to areas very close to the joints, so their arms, although they are very small, their mechanisms allow the movement of the human body. (a) How are they considered from the point of view of force efficiency? (b) What are the biomechanical benefits?arrow_forwardChoose the best for the below question ? The biceps and triceps are considereda. synergists.b. protagonists.c. antagonists.d. None of these are correct.arrow_forwardWhich of the following properties would limit the range of motion of a joint? a.) a muscle that crosses two joints b.) muscle fibers aligned in series c.) synovial fluid d.) a ligament that aligns with an axisarrow_forward
- Which of the following statements is correct about whathappens during flexion?a. The angle between bones is increased.b. The angle between bones is decreased.c. The bone moves away from the body.d. The bone moves toward the center of the body.arrow_forwardA muscle that assists the muscle primarily responsible for a given action is a __________. a.Synergist b.Antagonist c.Originator d.Levator A muscle whose name ends in the suffix -gluteus would be found attached to the ___________. a.cheek b.tongue c.buttock d.chestarrow_forwardSkeletal muscles can only produce a mechanical force as they are contracted, but a leg flexes and extends while walking. How can muscles perform this task?arrow_forward
- Which of the following is a responsibility of the body's muscles? (a) moving food through the body (b) pumping blood through the body (c)working with the skeleton to move the body (d) all of the abovearrow_forwardAn isometric exercise is one in which the joint angle does not change during the application of muscle force. For instance, you can join your hands together, pushing down with one hand and pushing up with the other. In each arm, the muscles that provide the force are connected to the bones of the arm by tendons. If you increase the forces but keep the angles the same, the muscles will still contract. Explain how this is possible.arrow_forwardPelvic splanchnic neurons function to Choose from the following: (A) increase constriction of the muscles found at the site of the pink/purple dots (B) function to dilate the muscles found at the site of the pink/purple dots (C) function to contract muscles indicated by the black arrows (D) function to dilate muscles indicated by the black arowsarrow_forward
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