Dopamine and serotonin

Acetyl choline and nor-adrenaline

Amphetamines and acetyl choline

Glutamate and serotonin

Decrease in the cell concentration of ADP.

Restriction of ATP production

Failure of ATP supply to fulfill the demand

Decrease of triglyceride stores in the body

It has the similar structure as that of cardiac muscle.

Skeletal muscle cells contain myosin filaments.

Skeletal muscle has a system of T-tubules.

The myofibrils of skeletal muscle are enveloped by sarcoplasmic reticulum.

The action potential propagates by activating voltage gated potassium channels along the axons of the neuron.

An action potential originates in the PNS.

The Na⁺ influx leads to a vesicle containing the neurotransmitter acetylcholine to fuse with the plasma membrane.

The action potential propagates by muscle fibre's plexus of T-tubules.

The alpha motor neuron generates action potential.

The neurotransmitter noradrenaline diffuses across the synapse and binds to nicotinic acetylcholine receptors on the myocyte.

The end-plate potential spreads evenly across the myocyte's sarcolemma.

The T-tubule system accomodates voltage-dependent calcium plexus.

Intracellular Ca⁺² is drawn by endoplasmic reticulum ATPase pump.

The cytoplasmic calcium binds to troponin T.

The ryanodine receptors find out the increase in intracellular calcium ions.

The action potential propogates across the T-tubules.

The SER acts as a reserve of Ca²⁺ for the contractile process.

Ca²⁺ entry across the plasma membrane is significant in maintaing the contraction of skeletal muscle in the body.

A rise in intracellular Ca²⁺ permits actin to interact with myosin.

The tension of a skeletal muscle fibre is totally governed by G proteins.

Trunk neural crest

Vagal and sacral neural crest

Cranial neural crest

Cardiac neural crest

The force of contraction is enhanced by propogating epinephrine.

Cardiac muscle contracts in reaction to action potentials generated in the autonomic nerve fibers.

The action potential of cardiac muscle has the similar duration as that of skeletal muscle in the body.

All of Ca²⁺ needed for contraction of cardiac muscles comes in a myocyte during the plateau phase of the action potential.

These are innervated by autonomic nerves similar to the neuromuscular junction of skeletal muscle.

All smooth muscles of the body act as a single motor unit.

Some smooth muscles also get contracted in absence of an action potential.

They never form the part of circulatory system.

is independent of initial length of the muscle

occurs with an isometric contraction

confides in the load moved by the muscle

is independent of the load moved by the muscle

is independent of an axon diameter

depends on the compactness of the myelin sheath surrounding the axon

remains unaffected if the axon of a nerve cell losses myelin

is the fastest in unmyelinated axons

There is an unequal distribution of ions on both sides of a neuron in a brain.

Nerve action potentials can be summated one with another.

May vary considerably in amplitude.

Becomes larger as stimulus strength increases.

white matter accomodates numerous nerve cell bodies

the myelin fibres are created by Schwann cells

neurons are conserved from changes in plasma composition

the cerebrospinal fluid is an ultrafiltrate of blood plasma

the muscle membrane possesses muscarinic receptors

the motor nerve endings releases the norepinephrine

curare initiates to prolongation of neuromuscular transmission

the motor nerve endings releases acetylcholine