plzz ans wit explanation

[passiondentistr]

Destruction of left spino crebellar tract at T2 wud be expected to eliminate positional sense on the ?

1.right side of the body above T2
2.right side below T2
3.left side above T2
4.left side below T2

Primary role of calcium in activation of cardiac muscle?
1. couple myosin n actin to form actinomyosin
2. cause depolarisation of the cell
3. activate myosin molecule so tat they interact wit actin filaments

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[dreamdental]

Primary role of calcium in activation of cardiac muscle?
1. couple myosin n actin to form actinomyosin

ca binds with troponin C there by moving tropomyosin from actin binding sites of myosin resulting in actinomyosin complex.

 

[impaction]

Primary role of calcium in activation of cardiac muscle?
1. couple myosin n actin to form actinomyosin

ca binds with troponin C there by moving tropomyosin from actin binding sites of myosin resulting in actinomyosin complex.

in cardiac muscle there is no troponin c.
calcium doesnt bind to it but it helps in formation of ca calmodulin as in smooth muscle

 

[dreamdental]

sorry i overlooked "cardiac"

 

[doctormeens]

Destruction of left spino crebellar tract at T2 wud be expected to eliminate positional sense on the ?

1.right side of the body above T2
2.right side below T2
3.left side above T2
4.left side below T2
Answer 4
Cerebellar injuries are ipsilateral on the same side
Primary role of calcium in activation of cardiac muscle?
1. couple myosin n actin to form actinomyosin
2. cause depolarisation of the cell
3. activate myosin molecule so tat they interact wit actin filaments

Answer 1

 

[shuntyman]

in cardiac muscle there is no troponin c.
calcium doesnt bind to it but it helps in formation of ca calmodulin as in smooth muscle

only smooth muscle has calmodulin...... skeletal m nd cardiac m has troponin

 

[passiondentistr]

only smooth muscle has calmodulin...... skeletal m nd cardiac m has troponin

any how the ans to tat q is choice 1 rite?

 

[passiondentistr]

1] P wave occuring in between S_T segment, ectopic beat occuring now will be in
a. Atria
b. lower border of bundle of his

 

[shuntyman]

1] P wave occuring in between S_T segment, ectopic beat occuring now will be in
a. Atria
b. lower border of bundle of his

 

[impaction]

1] P wave occuring in between S_T segment, ectopic beat occuring now will be in
a. Atria
b. lower border of bundle of his

P wave is produced by atrial depolarization
and
ST segment is the segment which represents in the diminishing of ventricular depolarization and the initial phase of ventricular repolarization.
now Pwave in ST segment means, atrial depolarization when ventricular depolarization is diminshing and ventricular repolariztion is starting.

this DOES not means that atria is producing another wave.
BUt here both auricle and ventricle are undergoing contraction independent of each other.
so when there is atrial contraction suggested by P wave , the ventricular depolarization is by the bundle of HIS,
as bundle of HIS is slower then AV node, so it lags a bit
thats why they asked about the presence of P wave in ST segment instead of P wave in QRS.

i hope it makes sense to you