Podcast
Questions and Answers
What is the function of a ligand-gated ion channel?
What is the function of a ligand-gated ion channel?
- Opens and closes in response to mechanical stimulation
- Opens in response to a chemical stimulus (correct)
- Opens in response to a change in membrane potential
- Opens in response to a change in shape
In the context of ion channels, what does a leak channel refer to?
In the context of ion channels, what does a leak channel refer to?
- A channel that only allows one specific type of ion to flow through
- A channel that allows ions to flow both ways continuously (correct)
- A channel with a gate that opens randomly
- A channel that is always closed
Where is the conus medullaris located?
Where is the conus medullaris located?
- At the lumbar enlargement
- At the beginning of the spinal cord
- At the cervical enlargement
- At the end of the spinal cord (correct)
What is the purpose of the meninges surrounding the spinal cord and brain?
What is the purpose of the meninges surrounding the spinal cord and brain?
Which ion diffuses from outside the cell to inside the cell when the potassium channel opens?
Which ion diffuses from outside the cell to inside the cell when the potassium channel opens?
What is the consequence of sodium diffusing from outside to inside the cell when the sodium channel opens?
What is the consequence of sodium diffusing from outside to inside the cell when the sodium channel opens?
Which area separates the dura mater from the arachnoid mater?
Which area separates the dura mater from the arachnoid mater?
What happens if damage occurs above the cervical enlargement of the spinal cord?
What happens if damage occurs above the cervical enlargement of the spinal cord?
Which part of the nervous system is responsible for controlling skeletal muscle movement?
Which part of the nervous system is responsible for controlling skeletal muscle movement?
What division of the autonomic nervous system is responsible for the 'fight or flight' response?
What division of the autonomic nervous system is responsible for the 'fight or flight' response?
Which type of neurons send signals from the receptors to the central nervous system (brain)?
Which type of neurons send signals from the receptors to the central nervous system (brain)?
What is the function of the parasympathetic division of the autonomic nervous system?
What is the function of the parasympathetic division of the autonomic nervous system?
Which type of neurons convey information from the visceral organs, smooth muscle, cardiac muscle, and glands?
Which type of neurons convey information from the visceral organs, smooth muscle, cardiac muscle, and glands?
What is the main function of sensory neurons within the nervous system?
What is the main function of sensory neurons within the nervous system?
Which part of the neuron is responsible for converting stimuli into action potentials?
Which part of the neuron is responsible for converting stimuli into action potentials?
What distinguishes the somatic nervous system from the autonomic nervous system?
What distinguishes the somatic nervous system from the autonomic nervous system?
What is the main difference between the nervous system and the endocrine system?
What is the main difference between the nervous system and the endocrine system?
Why does the endocrine system have a longer-lasting and more widespread effect compared to the nervous system?
Why does the endocrine system have a longer-lasting and more widespread effect compared to the nervous system?
How do electrical signals in the nervous system differ from hormones in the endocrine system in terms of speed?
How do electrical signals in the nervous system differ from hormones in the endocrine system in terms of speed?
Why does the endocrine system take longer to work compared to the nervous system?
Why does the endocrine system take longer to work compared to the nervous system?
In what way does the nervous system communicate differently with effectors compared to the endocrine system?
In what way does the nervous system communicate differently with effectors compared to the endocrine system?
What allows the endocrine system to have a more widespread effect on the body?
What allows the endocrine system to have a more widespread effect on the body?
What is the function of the posterior ramus of a spinal nerve?
What is the function of the posterior ramus of a spinal nerve?
What is the role of the anterior horn in the spinal cord?
What is the role of the anterior horn in the spinal cord?
What is found in the central canal of the gray commissure?
What is found in the central canal of the gray commissure?
Which region of the spinal cord is associated with voluntary neurons?
Which region of the spinal cord is associated with voluntary neurons?
What is contained in the posterior root ganglion?
What is contained in the posterior root ganglion?
Which section of the gray matter in the spinal cord is associated with autonomic motor neurons?
Which section of the gray matter in the spinal cord is associated with autonomic motor neurons?
Where do cervical nerves exit in relation to their corresponding vertebrae?
Where do cervical nerves exit in relation to their corresponding vertebrae?
What are T2 to T12 nerves known as?
What are T2 to T12 nerves known as?
What is the function of the axon hillock in a neuron?
What is the function of the axon hillock in a neuron?
Which type of neuron has multiple poles/processes, with one process being the axon and the others being dendrites?
Which type of neuron has multiple poles/processes, with one process being the axon and the others being dendrites?
What is the role of Schwann cells in the peripheral nervous system?
What is the role of Schwann cells in the peripheral nervous system?
Which type of electrical signal in neurons is temporary and used for short-distance communication?
Which type of electrical signal in neurons is temporary and used for short-distance communication?
In the electrical signals of neurons, what causes depolarization by entering the cell?
In the electrical signals of neurons, what causes depolarization by entering the cell?
What is the role of an excitatory postsynaptic potential (EPSP) in a neuron?
What is the role of an excitatory postsynaptic potential (EPSP) in a neuron?
Which factor affects the speed of conduction of an action potential in neurons?
Which factor affects the speed of conduction of an action potential in neurons?
