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习题练习:HL Topic B3.3 Muscle and motility



 作者: admin发布日期: 2025-01-27 11:07   总分: 9分  得分: _____________

答题人: 匿名未登录  开始时间: 25年01月27日 11:07  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/4) 切至整卷模式 搜藏此题  
第 1 题组 (共 4 题 4 分)
  1. What are the roles of the gh co: :u1qvw, ymi-kp9iant protein, titin, in muscle contraction and relaxhumwk9oipq:,: c 1y-vation?
I. It plays a role in elastic recoil of sarcomeres.
II. It binds to myosin in sarcomeres.
III. It resists overstretching of muscle fibres.
IV. It resists overcontraction of muscle fibres.

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2#
 
单选题 ( 1.0 分) (组内2/4) 切至整卷模式 搜藏此题  
  2. Why do limb muscles ac (px- z0q:l2n ftw0ukdt as antagonistic pairs to move a limb?

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3#
 
单选题 ( 1.0 分) (组内3/4) 切至整卷模式 搜藏此题  
  3. Which row correctly shows the function of each componenty tct5)/bqq 0o+b (cpy of a synovial joint? (c 5yqt+o ty0)pbbq/c



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4#
 
问答题 ( 1.0 分) (组内4/4) 切至整卷模式 搜藏此题  
4. Marine mammals breathe air1gn,lj sn1 2yj but have adaptations that allow them to live in wat gn,j1sn y21ljer.
List three adaptations of marine mammals to aquatic life.
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5#
 
问答题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第1/3题
题组内容描述:
5. The image shows a sarcomere under the electron microscope.
(a) Label the following on the di u0z(;3nw wauhagram:
A – An area containing only actin filaments.
B - An area containing both actin and myosin filaments.
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6#
 
问答题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第2/3题
题组内容描述:
5. The image shows a sarcomere under the electron microscope.
(b) Use the scale bar to estimate the actual length z 3knx0-o4zgtof this sarcomere. Show your working and includez3onk4zg tx0- units.
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7#
 
问答题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第3/3题
题组内容描述:
5. The image shows a sarcomere under the electron microscope.
(c) The semimembranosus muscle is found in the human thig.4li/1dj xxvkubu p(7h. When it contracts it can extend the knee joint and flex ul djxx(4u 1v7pki /b.the hip joint. It has a maximum sarcomere length of 4.4 µm and a minimum of 1.5 µm.
Calculate the percentage change in sarcomere length for this muscle when it contracts from 4.4µm to 1.5µm.
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8#
 
问答题 ( 1.0 分) (组内1/2) 切至整卷模式 搜藏此题  
第 3 题组 (共 2 题 2 分)
6. Ventilation in mammals involves the movement of the rib cage upwards then dowmmq+1i+els m 6nwards direct me+l6smi+m 1qions for inhalation and exhalation.
Discuss how the external and internal intercostal muscles act as an antagonistic pair of muscles to cause these movements.
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9#
 
问答题 ( 1.0 分) (组内2/2) 切至整卷模式 搜藏此题  
7. Outline the role of the motor neuron, the neur;.i 6ybtp/zy57 za bpaomuscular junction and muscle fibres in skeletal muscle con7aip.b a6pz5b z/ty;y traction.
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