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14
MCQ (Single Correct Answer)

Match the following columns.

Column I Column II
A. Sternum 1. Synovial fluid
B. Glenoid cavity 2. Vertebrae
C. Freely movable joint 3. Pectoral girdle
D. Cartilagenous joint 4. Flat bones

A
A-2, B-1, C-3, D-4
B
A-4, B-3, C-1, D-2
C
A-2, B-1, C-4, D-3
D
A-3, B-1, C-2, D-4
15

Name the cells/tissues in human body which

(a) exhibit amoeboid movement

(b) exhibit ciliary movement

Explanation

(a) Macrophages and leucocytes in blood exhibit amoeboid movement. Cytoskeletal elements like microfilaments are also involved in amoeboid movement.

(b) Ciliary Movement These types of movements occurs mostly in the internal organs, which are lined by the ciliated epithelium. e.g., cilia in trachea helps in removing dust particle and foreign substances inhaled along with atmospheric air.

Passage of ova through the female reproductive tract is also facilitated by the ciliary movement. This is due to the presence of ciliated epithelium in the Fallopian tube.

16
Locomotion requires a perfect coordinated activity of muscular ............... systems.
Explanation
Locomotion requires a prefect coordinated activity of muscular, skeletal and neural systems.
17
Sarcolemma, sarcoplasm and sarcoplasmic reticulum refer to particular type of cell in our body. Which is this cell and to what parts of that cell do these names refer to?
Explanation
There parts belongs to the muscle fibre, which is lined by the plasma membrane called sarcolemma. Muscle fibre is a syncitium because sarcoplasm (the cytoplasm) of muscle fibre contains number of nuclei and sarcoplasmic reticulum is the endoplasmic reticulum of the muscle fibre and is the store house of calcium ions.
18

Label the different components of actin filament in the diagram given below

Explanation

Representing different component of actin filament

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