Communication junctions found at some fusion points that allow the cardiac muscle cells to contract as a unit are called as:
1. Intercalated discs
2. Sarcolemma
3. Nodes of Ranvier
4. Motor end plates
The correct order for the location of tissues (i), (ii), (iii), (iv) respectively is
|
(i) |
Cartilage |
(1) |
Beneath the skin |
|
(ii) |
cuboidal epithelium |
(2) |
wall of intestine |
|
(iii) |
Smooth muscle |
(3) |
ducts of glands |
|
(iv) |
Areolar tissue |
(4) |
tip of nose |
1. 3, 4, 2, 1
2. 3, 1, 4, 2
3. 4, 3, 2, 1
4. 1, 3, 2, 4
Which of the following muscles act involuntarily?
(a) Striated muscles (b) Smooth muscles
(c) Cardiac muscles (d) Skeletal muscles
1. (a) & (b)
2. (b) & (c)
3. (c) & (d)
4. (a) & (d)
| 1. | Facilitating voluntary control |
| 2. | Providing structural support |
| 3. | Allowing coordinated contractions of the heart |
| 4. | Linking the muscle to bones |
Smooth muscles are:
1. Voluntary and striated
2. Voluntary and unstriated
3. Involuntary and unstraited
4. Involuntary and striated
Select the incorrectly matched pair from the following:
| 1. | Chondrocytes | Smooth muscle cells |
| 2. | Neurons | Nerve cells |
| 3. | Fibroblast | Areolar tissue |
| 4. | Osteocytes | Bone cells |