EASY

Earn 100

Nissl bodies are specifically composed of

50% studentsanswered this correctly

Important Questions on Neural Control and Coordination

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Concentration of

N a^{+}

ions outside a nerve cell is

~ 100

times more than inside. The concentration of

K^{+}

ions is more inside the cells. The levels of

N a^{+}

ions and

K^{+}

ions are maintained by:

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Each neuron has a cell body, axon, and dendrites. The dendrites are the protoplasmic extensions of the nerve cell. The axodendritic type of chemical synapse is formed by the association between the axon terminal of the pre-synaptic neuron and the dendrites of a post-synaptic neuron. The action potential causes the fusion of the synaptic vesicle to release the neurotransmitters for neurotransmission. Select the correct option from the following.

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Nissl bodies are mainly composed of

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Neurotransmitter released at the neuromuscular junction of a voluntary muscles is:

MEDIUM

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Identify $A, B, C$ and $D$ in the following graph regarding nerve impulse transmission.

Question Image

MEDIUM

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Which one of the following ion pairs is involved in nerve impulses?

MEDIUM

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Select the incorrect statement regarding synapses:

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Which of the following is secreted at the ends of an axon?

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Action potential in neurons is generated by a rapid influx of

MEDIUM

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Assertion (A): Impulse transmission across electrical synapse is always faster than that of chemical synapse.

Reason (R): In electrical synapse, pre and post synaptic membranes are in very close proximity and have links called gap functions.

The correct option among the following is

MEDIUM

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

When 'A' stands for Axon, 'D' for Dendrites, 'S' for Synapse and 'B' for Cell body, a typical sequence of structures between a receptor and an efferent is

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Stimulation of a muscle fiber by a motor neuron occurs at:

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

Assertion ( $A$ ): In myelinated nerve fibres, action potentials are conducted at a faster rate.

Reason ( $R$ ): The myelin present between nodes of Ranvier has concentrated $Na$ and $K$ voltage-gated channels.

EASY

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse

The transport of which neutrotransmitter is interfered by cocaine?

MEDIUM

Biology>Human Anatomy and Physiology-III>Neural Control and Coordination>Generation and Conduction of Nerve Impulse