Nervous System Overview Quiz

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What divides the motor division of the nervous system?

Sensory and motor

Cerebral and peripheral

Sympathetic and parasympathetic

Voluntary and involuntary (correct)

What is the primary function of dendrites in a neuron?

To transmit signals between neurons

To receive signals from other neurons (correct)

To insulate the axon

To carry information away from the cell body

Which of the following structures is responsible for insulating axons?

Myelin sheath (correct)

Cell body

Dendrites

Neuroglial cells

What is the role of Schwann cells in the nervous system?

To form the myelin sheath Signup and view all the answers

How do neurons communicate with one another?

Via synapses Signup and view all the answers

What is a key feature of the cell body of a neuron?

It contains many organelles Signup and view all the answers

What are the Nodes of Ranvier primarily associated with?

Increasing impulse propagation speed Signup and view all the answers

Which part of the nervous system contains grey matter?

Centre of spinal cord and peripheral brain Signup and view all the answers

In terms of structure, how do axons generally compare to dendrites?

Axons can be longer than dendrites Signup and view all the answers

What happens to the neuron’s cell body when it undergoes damage?

It cannot be replaced Signup and view all the answers

What are the two main divisions of the nervous system?

Central Nervous System and Peripheral Nervous System Signup and view all the answers

Which part of the nervous system is responsible for immediate responses?

Central Nervous System Signup and view all the answers

What role does the sensory division of the peripheral nervous system have?

It collects information from receptors and relays it to the CNS. Signup and view all the answers

Which cells are predominantly found in nervous tissue?

Neurons and Glial Cells Signup and view all the answers

How does the endocrine system differ from the nervous system?

It provides slower and more prolonged responses. Signup and view all the answers

What anatomical structures are included in the central nervous system?

Brain and Spinal Cord Signup and view all the answers

Which of the following is a primary function of the nervous system?

Detecting changes inside and outside the body Signup and view all the answers

What is true about the relationship between the nervous and endocrine systems?

Together, they maintain homeostasis. Signup and view all the answers

Which characteristic is NOT associated with nervous tissue?

Stores energy for movement Signup and view all the answers

Which structures serve as receptors in the peripheral nervous system?

Skin, Muscles, and Organs Signup and view all the answers

What function does the myelin sheath serve for axons?

Increases the rate of impulse transmission Signup and view all the answers

What are the gaps in the myelin sheath called?

Nodes of Ranvier Signup and view all the answers

Which type of cell is responsible for providing myelination in the peripheral nervous system?

Schwann cells Signup and view all the answers

How do dendrites function in relation to the neuron's cell body?

They provide a large surface area for receiving information Signup and view all the answers

What characterizes the resting potential of a neuron?

It is a stable electrical potential Signup and view all the answers

What role do neuroglial cells play in the nervous system?

Support and protect neurons Signup and view all the answers

Which type of cell continues to replicate throughout a person's life?

Microglia Signup and view all the answers

What occurs during the action potential of a neuron?

A brief reversal of polarity happens Signup and view all the answers

Which properties of neurons involve their ability to respond to stimuli?

Irritability and conductivity Signup and view all the answers

What is primarily located in the area of blood vessels in the central nervous system?

Microglia Signup and view all the answers

What is the primary function of astrocytes in the central nervous system?

To provide structural support Signup and view all the answers

Which type of glial cell is responsible for forming myelin in the central nervous system?

Oligodendrocytes Signup and view all the answers

What does the blood-brain barrier primarily protect the brain from?

Toxic substances and chemical changes Signup and view all the answers

Which of the following substances can quickly cross the blood-brain barrier?

Glucose Signup and view all the answers

What are synaptic vesicles responsible for?

Storing neurotransmitters Signup and view all the answers

What is found in the space between neurons called?

Synaptic cleft Signup and view all the answers

Which neurotransmitters are mentioned as being involved in synaptic transmission?

Acetylcholine and noradrenaline Signup and view all the answers

What structure forms a sleeve around blood vessels in the brain?

Astrocytes Signup and view all the answers

Which of the following correctly describes the transmission of nerve impulses?

Involves more than one nerve often Signup and view all the answers

What is the composition of the protective barrier separating blood from neurons?

Capillary wall and astrocytes Signup and view all the answers