Nervous System Functions

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Which of the following is the key difference between electrical and chemical synapses in terms of transmission speed?

Electrical synapses have a faster transmission speed compared to chemical synapses. (correct)

Chemical synapses have a faster transmission speed compared to electrical synapses.

Electrical and chemical synapses have the same transmission speed.

Transmission speed is not a distinguishing factor between electrical and chemical synapses.

What is the distance between the pre-synaptic and post-synaptic neurons in a chemical synapse?

3.5 nanometers

50-100 nanometers

30-50 nanometers (correct)

The distance is not specified in the text.

Which of the following is a key functional property shared by both electrical and chemical synapses?

Neither irritability/excitability nor conductivity

Irritability/Excitability

Both irritability/excitability and conductivity (correct)

Conductivity

Which type of neuron has a single axon that quickly divides into proximal and distal branches?

Unipolar neuron Signup and view all the answers

Which type of neuron conveys information from the central nervous system to muscles and glands?

Efferent (motor) neuron Signup and view all the answers

What is the primary function of the nervous system?

To serve as the master controlling and communicating system of the body Signup and view all the answers

Which of the following is NOT a key component of the neuron structure?

Mitochondria Signup and view all the answers

What is the role of the $myelin\ sheath$ and $neurilemma$ in a neuron?

They are coverings that insulate and protect the axon Signup and view all the answers

Which component of the nervous system is responsible for 'processing and interpreting the sensory input and making decisions about what should be done'?

Brain Signup and view all the answers

What is the primary function of the cerebrospinal fluid (CSF)?

To supply energy and immune protection for the brain and spinal cord Signup and view all the answers

Which part of the vertebral column is responsible for protecting the spinal cord in the lower back region?

Lumbar (L1 to L5) Signup and view all the answers

What is the primary function of the spinal cord in relation to reflexes?

It manages some reflexes without involving the brain Signup and view all the answers

Which of the following statements accurately describes the role of the central nervous system?

It is responsible for higher neural functions like memory and learning Signup and view all the answers

What is the primary role of the spinal cord in transmitting signals between the brain and the body?

It carries nerve signals from the brain to the body and vice versa Signup and view all the answers

What is the primary function of the dura mater in the spinal cord?

Protecting the spinal cord from injury Signup and view all the answers

Which part of the brain integrates sensory impulses and information to form perceptions, thoughts, and memories?

Cerebral cortex Signup and view all the answers

What is the main function of the arachnoid mater in relation to the spinal cord?

Regulating muscle control and sensory perception Signup and view all the answers

Which part of the brain is responsible for muscle control, sensory perception, memory, emotions, and speech?

Gray matter Signup and view all the answers

What is the main function of the pia mater in relation to the spinal cord?

Covering the spinal cord Signup and view all the answers