QBManager

Neural Control and Coordination

284581 The contractile regulatory proteins that mask and unmask active sites in the sarcomere are

1 Troponin and Tropomyosin

2 Troponin and Myosin

3 Actin and Myosin

4 Tropnin-I and Troponin-C

TS EAMCET-2015

Neural Control and Coordination

284583 Specialized cells that are sensitive to vibration, pain and tension are called

1 Proprioceptors

2 Baroreceptors

3 Statoacoustic receptors

4 Frigidoreceptors

MHT CET-04.10.2020 Shift-I

Neural Control and Coordination

284585 Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?

1 Stimuli

\to

Neurotransmitter secretion

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

Excitation of

T

-system

\to

sliding of actin filaments.

2 Stimuli

\to

Neurotransmitter secretion

\to

Excitation of T-system

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

3 Stimuli

\to

Excitation of T-system

\to

Neurotransmitter secretion

\to

Cross bridges Formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

4 Stimuli

\to

Neurotransmitter secretion

\to

Cross bridges formation

\to

Excitation of T-system

\to

sliding of actin filament

Explanation:

B
Stimuli $\to$ Neurotransmitter secretion $\to$ Excitation of T-system $\to$ Release of ${Ca}^{+ +} \to$ Cross bridges formation $\to$ Sliding of Actin filaments $\to^{'} H^{'}$ band diminishes.
During muscle contraction the myosin heads come in close contact with the thin filaments.

GUJCET-2011

Neural Control and Coordination

284587 Resting membrane potential is maintained by

1 Hormones

2 Neurotransmitters

3 Ion pumps

4 None of the above

Explanation:

C
Sodium pump starts working to maintain the normal resting membrane potential by expelling $Na$ and in taking of $K^{+}$ . Thus, resting membrane potential is maintained by ion pumps.

Assam CEE-2014

Neural Control and Coordination

284588 In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-

1

K^{+}

and

{Na}^{+}

out of the cell

2

{Na}^{+}

into the cell

3

{Na}^{+}

out of the cell

4

K^{+}

into the cell

Explanation:

B
In the resting state of the neural membrane, diffusion due to concentration gradients would drive $K^{+}$ into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.

AIPMT-2004

Neural Control and Coordination

284581 The contractile regulatory proteins that mask and unmask active sites in the sarcomere are

1 Troponin and Tropomyosin

2 Troponin and Myosin

3 Actin and Myosin

4 Tropnin-I and Troponin-C

TS EAMCET-2015

Neural Control and Coordination

284583 Specialized cells that are sensitive to vibration, pain and tension are called

1 Proprioceptors

2 Baroreceptors

3 Statoacoustic receptors

4 Frigidoreceptors

MHT CET-04.10.2020 Shift-I

Neural Control and Coordination

284585 Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?

1 Stimuli

\to

Neurotransmitter secretion

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

Excitation of

T

-system

\to

sliding of actin filaments.

2 Stimuli

\to

Neurotransmitter secretion

\to

Excitation of T-system

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

3 Stimuli

\to

Excitation of T-system

\to

Neurotransmitter secretion

\to

Cross bridges Formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

4 Stimuli

\to

Neurotransmitter secretion

\to

Cross bridges formation

\to

Excitation of T-system

\to

sliding of actin filament

Explanation:

B
Stimuli $\to$ Neurotransmitter secretion $\to$ Excitation of T-system $\to$ Release of ${Ca}^{+ +} \to$ Cross bridges formation $\to$ Sliding of Actin filaments $\to^{'} H^{'}$ band diminishes.
During muscle contraction the myosin heads come in close contact with the thin filaments.

GUJCET-2011

Neural Control and Coordination

284587 Resting membrane potential is maintained by

1 Hormones

2 Neurotransmitters

3 Ion pumps

4 None of the above

Explanation:

C
Sodium pump starts working to maintain the normal resting membrane potential by expelling $Na$ and in taking of $K^{+}$ . Thus, resting membrane potential is maintained by ion pumps.

Assam CEE-2014

Neural Control and Coordination

284588 In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-

1

K^{+}

and

{Na}^{+}

out of the cell

2

{Na}^{+}

into the cell

3

{Na}^{+}

out of the cell

4

K^{+}

into the cell

Explanation:

B
In the resting state of the neural membrane, diffusion due to concentration gradients would drive $K^{+}$ into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.

AIPMT-2004

Neural Control and Coordination

284581 The contractile regulatory proteins that mask and unmask active sites in the sarcomere are

1 Troponin and Tropomyosin

2 Troponin and Myosin

3 Actin and Myosin

4 Tropnin-I and Troponin-C

TS EAMCET-2015

Neural Control and Coordination

284583 Specialized cells that are sensitive to vibration, pain and tension are called

1 Proprioceptors

2 Baroreceptors

3 Statoacoustic receptors

4 Frigidoreceptors

MHT CET-04.10.2020 Shift-I

Neural Control and Coordination

284585 Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?

1 Stimuli

\to

Neurotransmitter secretion

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

Excitation of

T

-system

\to

sliding of actin filaments.

2 Stimuli

\to

Neurotransmitter secretion

\to

Excitation of T-system

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

3 Stimuli

\to

Excitation of T-system

\to

Neurotransmitter secretion

\to

Cross bridges Formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

4 Stimuli

\to

Neurotransmitter secretion

\to

Cross bridges formation

\to

Excitation of T-system

\to

sliding of actin filament

Explanation:

B
Stimuli $\to$ Neurotransmitter secretion $\to$ Excitation of T-system $\to$ Release of ${Ca}^{+ +} \to$ Cross bridges formation $\to$ Sliding of Actin filaments $\to^{'} H^{'}$ band diminishes.
During muscle contraction the myosin heads come in close contact with the thin filaments.

GUJCET-2011

Neural Control and Coordination

284587 Resting membrane potential is maintained by

1 Hormones

2 Neurotransmitters

3 Ion pumps

4 None of the above

Explanation:

C
Sodium pump starts working to maintain the normal resting membrane potential by expelling $Na$ and in taking of $K^{+}$ . Thus, resting membrane potential is maintained by ion pumps.

Assam CEE-2014

Neural Control and Coordination

284588 In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-

1

K^{+}

and

{Na}^{+}

out of the cell

2

{Na}^{+}

into the cell

3

{Na}^{+}

out of the cell

4

K^{+}

into the cell

Explanation:

B
In the resting state of the neural membrane, diffusion due to concentration gradients would drive $K^{+}$ into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.

AIPMT-2004

Neural Control and Coordination

284581 The contractile regulatory proteins that mask and unmask active sites in the sarcomere are

1 Troponin and Tropomyosin

2 Troponin and Myosin

3 Actin and Myosin

4 Tropnin-I and Troponin-C

TS EAMCET-2015

Neural Control and Coordination

284583 Specialized cells that are sensitive to vibration, pain and tension are called

1 Proprioceptors

2 Baroreceptors

3 Statoacoustic receptors

4 Frigidoreceptors

MHT CET-04.10.2020 Shift-I

Neural Control and Coordination

284585 Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?

1 Stimuli

\to

Neurotransmitter secretion

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

Excitation of

T

-system

\to

sliding of actin filaments.

2 Stimuli

\to

Neurotransmitter secretion

\to

Excitation of T-system

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

3 Stimuli

\to

Excitation of T-system

\to

Neurotransmitter secretion

\to

Cross bridges Formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

4 Stimuli

\to

Neurotransmitter secretion

\to

Cross bridges formation

\to

Excitation of T-system

\to

sliding of actin filament

Explanation:

B
Stimuli $\to$ Neurotransmitter secretion $\to$ Excitation of T-system $\to$ Release of ${Ca}^{+ +} \to$ Cross bridges formation $\to$ Sliding of Actin filaments $\to^{'} H^{'}$ band diminishes.
During muscle contraction the myosin heads come in close contact with the thin filaments.

GUJCET-2011

Neural Control and Coordination

284587 Resting membrane potential is maintained by

1 Hormones

2 Neurotransmitters

3 Ion pumps

4 None of the above

Explanation:

C
Sodium pump starts working to maintain the normal resting membrane potential by expelling $Na$ and in taking of $K^{+}$ . Thus, resting membrane potential is maintained by ion pumps.

Assam CEE-2014

Neural Control and Coordination

284588 In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-

1

K^{+}

and

{Na}^{+}

out of the cell

2

{Na}^{+}

into the cell

3

{Na}^{+}

out of the cell

4

K^{+}

into the cell

Explanation:

B
In the resting state of the neural membrane, diffusion due to concentration gradients would drive $K^{+}$ into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.

AIPMT-2004

Neural Control and Coordination

284581 The contractile regulatory proteins that mask and unmask active sites in the sarcomere are

1 Troponin and Tropomyosin

2 Troponin and Myosin

3 Actin and Myosin

4 Tropnin-I and Troponin-C

TS EAMCET-2015

Neural Control and Coordination

284583 Specialized cells that are sensitive to vibration, pain and tension are called

1 Proprioceptors

2 Baroreceptors

3 Statoacoustic receptors

4 Frigidoreceptors

MHT CET-04.10.2020 Shift-I

Neural Control and Coordination

284585 Which of the following option shows correct order of some stages of muscle contraction from the beginning to the end of the process?

1 Stimuli

\to

Neurotransmitter secretion

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

Excitation of

T

-system

\to

sliding of actin filaments.

2 Stimuli

\to

Neurotransmitter secretion

\to

Excitation of T-system

\to

Release of

{Ca}^{+ +} \to

Cross bridges formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

3 Stimuli

\to

Excitation of T-system

\to

Neurotransmitter secretion

\to

Cross bridges Formation

\to

sliding of actin filaments

\to

'

H

' band diminishes.

4 Stimuli

\to

Neurotransmitter secretion

\to

Cross bridges formation

\to

Excitation of T-system

\to

sliding of actin filament

Explanation:

B
Stimuli $\to$ Neurotransmitter secretion $\to$ Excitation of T-system $\to$ Release of ${Ca}^{+ +} \to$ Cross bridges formation $\to$ Sliding of Actin filaments $\to^{'} H^{'}$ band diminishes.
During muscle contraction the myosin heads come in close contact with the thin filaments.

GUJCET-2011

Neural Control and Coordination

284587 Resting membrane potential is maintained by

1 Hormones

2 Neurotransmitters

3 Ion pumps

4 None of the above

Explanation:

C
Sodium pump starts working to maintain the normal resting membrane potential by expelling $Na$ and in taking of $K^{+}$ . Thus, resting membrane potential is maintained by ion pumps.

Assam CEE-2014

Neural Control and Coordination

284588 In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive :-

1

K^{+}

and

{Na}^{+}

out of the cell

2

{Na}^{+}

into the cell

3

{Na}^{+}

out of the cell

4

K^{+}

into the cell

Explanation:

B
In the resting state of the neural membrane, diffusion due to concentration gradients would drive $K^{+}$ into the cell. The concentration of potassium ions is higher inside the cell compared to outside, so they tend to move from areas of higher concentration to area of lower concentration. It maintain electric potential across the cell membrane.

AIPMT-2004