Homework Answers
B. Angle at which a muscle pulls relative to the long axis of the bone that it pulls on
The angle of muscle pull is the angle formed between the line of pull of the muscle and the longitudnal axis of the bone on which the muscle is acting.
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131. The angle of muscle pull is known as which of the following? A Angle at...
, Which muscle is not associated with a movement of the eyeball? ) superior rectus b)...
, Which muscle is not associated with a movement of the eyeball? ) superior rectus b) lateral rectus c) superior oblique d) genioglossus 10. The term abductor means that a muscle a) increases the angle at a joint b) produces a downward movement c) moves a part away from the midline of the body or a body part d) elevates a body part Matching 11. muscle of facial expression 12. muscle that moves the eyeball 13. muscle used in breathing...
Vectors A and B lie in an xy plane. A has magnitude 7.3 and angle 131°...
Vectors A and B lie in an xy plane. A has magnitude 7.3 and angle 131° relative to +x direction; B has components B,--7.71and By- -8.09. What are the angles between the negative direction of the y axis and (a) the direction of A , (b) the direction of the product A × B , and (c) the direction of AxB3.00 k? (a) Number 139 Units (degrees) (b) Number 90 Units (degrees) (c) Number9 Units (degrees)
19. Which of the following actions does the zygomaticus major muscle perform? 8. The sternocleidomastoid originates...
19. Which of the following actions does the zygomaticus major muscle perform? 8. The sternocleidomastoid originates on the a. Retracting and elevating the angle of the mouth a. first rib b. Closing and protruding the lips b. mastoid process c. Lowering the angle of the mouth C. sternum d. Drawing the upper lip outward, upward, and laterally d. occipital bone 11. Which of the following is an example of syndesmosis? a. The joint between the tibia and the femur 3....
8. Which muscle is adapted to be highly resistant to fatigue? a) Cardiac b) Striped c)...
8. Which muscle is adapted to be highly resistant to fatigue? a) Cardiac b) Striped c) Unstriped d) Voluntary 9. S pongy bone is ound in the interior of both the ends and long a) parts obones b) restricted to the long parts of bones c) transitional between the ends and long parts of bones d) restricted to the ends of bones
For problems 5-8, the joint is moving through its range of motion. As it does this,...
For problems 5-8, the joint is moving through its range of motion. As it does this, the angle between the muscle and the long axis of the bone, theta, changes. Assume that the muscle force is a constant 500 N and the distance from axis of rotation to the muscle insertion, d, is 0.02 m. Find the torque for each angle theta. Refer to the figure below. (HINT: Calculate the torque using T = F * sin(angle) * d.) 5....
Which of the following characteristics are shared by cardiac muscle cells and smooth muscle cells? a....
Which of the following characteristics are shared by cardiac muscle cells and smooth muscle cells? a. Cells that branch and produce force along multiple planes when they contract. b. Graded contraction (not all or none). c. No T-tubules. d. Both a and b are characteristics shared by these two types of muscle. e. Both b and c are characteristics shared by these two types of muscle.
Which of the following free body diagrams best represents the gravitational pull in the Sun-Earth system?...
Which of the following free body diagrams best represents the gravitational pull in the Sun-Earth system? (relative size of Earth, blue circle, and Sun, yellow circle, not drawn to scale). A B C There is no gravitational pull between Earth and the Sun. Briefly explain your answer to the previous question.
QUESTION 1 Which of the following is a function of skin? a. prevents dehydration b. sensory...
QUESTION 1 Which of the following is a function of skin? a. prevents dehydration b. sensory reception C. helps control body temperature d. all of the above QUESTION 2 Coronary arteries supply oxygen and nutrients to the a. stomach b. brain C. heart d. kidneys QUESTION 3 Which of the following tissues is responsible for peristalsis? a. Skeletal muscle b.smooth muscle C. cardiac muscle d. bone
Which of the following is not a function of the skeletal system? a) productions of blood...
Which of the following is not a function of the skeletal system? a) productions of blood cells b) storage of minerals and fat c) support and protection of the body d) providing for flexible body movement e) production of body heat All of the following are found in the anatomy of a long bone, except which? a) red bone marrow b) compact bone c) ligaments d) yellow bone marrow e) periosteum Which of the following ways our muscles generate ATP...
1) Muscle contraction is initiated at the NMJ by the release of _______________ from synaptic vesicles. a. Epinephrine b...
1) Muscle contraction is initiated at the NMJ by the release of _______________ from synaptic vesicles. a. Epinephrine b. Acetylcholine c. Calcium d. Sodium 2) Which of the following types of muscle contractions describes force development with no change in the muscle’s length? a. isokinetic b. isometric c. concentric d. eccentric 3) Which of the following describes the ability of a muscle to contract repeatedly against an opposing force? a. Muscular Endurance b. Aerobic Endurance c. Muscular Strength d. Muscular...
, Which muscle is not associated with a movement of the eyeball? ) superior rectus b) lateral rectus c) superior oblique d) genioglossus 10. The term abductor means that a muscle a) increases the angle at a joint b) produces a downward movement c) moves a part away from the midline of the body or a body part d) elevates a body part Matching 11. muscle of facial expression 12. muscle that moves the eyeball 13. muscle used in breathing...
Vectors A and B lie in an xy plane. A has magnitude 7.3 and angle 131° relative to +x direction; B has components B,--7.71and By- -8.09. What are the angles between the negative direction of the y axis and (a) the direction of A , (b) the direction of the product A × B , and (c) the direction of AxB3.00 k? (a) Number 139 Units (degrees) (b) Number 90 Units (degrees) (c) Number9 Units (degrees)
19. Which of the following actions does the zygomaticus major muscle perform? 8. The sternocleidomastoid originates on the a. Retracting and elevating the angle of the mouth a. first rib b. Closing and protruding the lips b. mastoid process c. Lowering the angle of the mouth C. sternum d. Drawing the upper lip outward, upward, and laterally d. occipital bone 11. Which of the following is an example of syndesmosis? a. The joint between the tibia and the femur 3....
8. Which muscle is adapted to be highly resistant to fatigue? a) Cardiac b) Striped c) Unstriped d) Voluntary 9. S pongy bone is ound in the interior of both the ends and long a) parts obones b) restricted to the long parts of bones c) transitional between the ends and long parts of bones d) restricted to the ends of bones
For problems 5-8, the joint is moving through its range of motion. As it does this, the angle between the muscle and the long axis of the bone, theta, changes. Assume that the muscle force is a constant 500 N and the distance from axis of rotation to the muscle insertion, d, is 0.02 m. Find the torque for each angle theta. Refer to the figure below. (HINT: Calculate the torque using T = F * sin(angle) * d.) 5....
Which of the following free body diagrams best represents the gravitational pull in the Sun-Earth system? (relative size of Earth, blue circle, and Sun, yellow circle, not drawn to scale). A B C There is no gravitational pull between Earth and the Sun. Briefly explain your answer to the previous question.
QUESTION 1 Which of the following is a function of skin? a. prevents dehydration b. sensory reception C. helps control body temperature d. all of the above QUESTION 2 Coronary arteries supply oxygen and nutrients to the a. stomach b. brain C. heart d. kidneys QUESTION 3 Which of the following tissues is responsible for peristalsis? a. Skeletal muscle b.smooth muscle C. cardiac muscle d. bone
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