Nervous and Endocrine System: Comparison and Contrast

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What is the primary difference in the speed of action between the nervous and endocrine systems?

The endocrine system is faster because hormones are carried by the bloodstream
The nervous system responds rapidly, while the endocrine system responds slowly (correct)
The nervous system is slower due to the distance signals need to travel
The speed of action is the same in both systems

What is the primary mode of transmission for hormonal messages in the endocrine system?

Mechanical signals through the skeletal system
Chemical transportation through the bloodstream (correct)
Electrochemical signals along nerve fibres
Electrical impulses along muscles

How do nervous impulses differ from hormonal responses in terms of duration?

Nervous impulses have a longer duration, while hormonal responses are shorter
Hormonal responses have a longer duration, while nervous impulses are shorter (correct)
Both have the same duration of action
The duration of action is dependent on the stimulus

What is the primary difference in the specificity of messages between the nervous and endocrine systems?

Nervous impulses target specific sites, while hormonal responses are widespread (D) Signup and view all the answers

How do the nervous and endocrine systems work together to maintain homeostasis?

They work together to coordinate and regulate the activities of other cells, tissues, organs, and systems (D) Signup and view all the answers

What is the primary difference in the nature of messages between the nervous and endocrine systems?

Hormonal responses are chemical, while nervous impulses are electrochemical (A) Signup and view all the answers

What is the primary function of the synaptic knob in the synapse?

To release the neurotransmitter into the synaptic cleft (A) Signup and view all the answers

What is the effect of neurotoxin on the nervous system?

It prevents the binding of neurotransmitters to the postsynaptic neuron (B) Signup and view all the answers

What is the primary function of exocrine glands?

To secrete substances into a duct that carries the secretion to the surface of the body (D) Signup and view all the answers

What is the role of Ca2+ in the synaptic transmission process?

It triggers the fusion of vesicles with the presynaptic membrane (A) Signup and view all the answers

What is the primary function of the endocrine system?

To secrete hormones into the extracellular fluid (D) Signup and view all the answers

What is the effect of the neurotoxin on muscle contraction?

It prevents muscle contraction (C) Signup and view all the answers

What is the primary function of hormone receptors in the endocrine system?

To combine with hormones to regulate cellular activity (C) Signup and view all the answers

Which type of hormone is characterized by its slow action and lipid solubility?

Steroid hormone (B) Signup and view all the answers

What is the primary difference between amine hormones and steroid hormones?

Their speed of action and solubility (D) Signup and view all the answers

What is the role of the nervous system in maintaining homeostasis?

To transmit nerve impulses to and from various tissues (A) Signup and view all the answers

What is the primary function of paracrine hormones?

To influence the activity of adjacent cells (C) Signup and view all the answers

How do hormone-receptor complexes activate cellular responses in target cells?

By producing a secondary messenger to activate enzymes (A) Signup and view all the answers