MCQ
Neural canal is present in
- AHumerus
- BTibio-fibula
- ✓Vertebral column
- DCranial bones
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$(I)$ In human body, it is made of number of muscle bundles.
$(II)$ Muscle bundles contains a number of muscle fibers and fiber is lined by the sarcollemma.
$(III)$ In Muscle fiber, sarcoplasm contains only one nucleus.
$(IV)$ In muscle fiber, sarcoplasmic reticulum is the store house of calcium ions.
| List $I$ | List $I$ |
| $A$ $P$ wave | $I$ Heart muscles are electrically silent. |
| $B$ $QRS$ complex | $II$ Depolarisation of ventricles. |
| $C$ $T$ wave | $III$ Depolarisation of atria. |
| $D$ $T-P$ gap | $IV$ Repolarisation of ventricles. |
Choose the correct answer from the options given below :
Select the right choice for $A$ and $B$ to complete the given $NCERT$ statement
Characteristics $-$ Examples