Podcast
Questions and Answers
What is the function of the axon hillock?
What is the function of the axon hillock?
- To transmit action potentials
- To provide structural support
- To maintain the axon length
- To trigger the initiation of action potentials (correct)
Which motor protein is responsible for anterograde transport in axons?
Which motor protein is responsible for anterograde transport in axons?
- Dynein
- Kinesin (correct)
- Myosin
- Actin
What type of axonal transport is carried out by dynein?
What type of axonal transport is carried out by dynein?
- Anterograde transport (- → +)
- Stationary transport
- Bidirectional transport
- Retrograde transport (+ → -) (correct)
What is the main function of neurofilaments in axons?
What is the main function of neurofilaments in axons?
Why do axons generally branch less profusely than dendrites?
Why do axons generally branch less profusely than dendrites?
What is the main difference between axons and dendrites in terms of length?
What is the main difference between axons and dendrites in terms of length?
What is the term used to refer to the plasma membrane of an axon?
What is the term used to refer to the plasma membrane of an axon?
What are the small dilations at the end of axonal branches called?
What are the small dilations at the end of axonal branches called?
Which layer of the meninges is usually fused but separates to form blood-filled dural venous sinuses in specific areas around the brain?
Which layer of the meninges is usually fused but separates to form blood-filled dural venous sinuses in specific areas around the brain?
What is the anatomical feature that separates the dura mater from the periosteum of the vertebrae?
What is the anatomical feature that separates the dura mater from the periosteum of the vertebrae?
What role does the subarachnoid space play in protecting the central nervous system?
What role does the subarachnoid space play in protecting the central nervous system?
Which layer of the meninges is described as 'avascular' due to its lack of nutritive capillaries?
Which layer of the meninges is described as 'avascular' due to its lack of nutritive capillaries?
Where does the subarachnoid space communicate with in the brain?
Where does the subarachnoid space communicate with in the brain?
Which part of the meninges has fewer trabeculae in the spinal cord, leading to easier differentiation from the pia mater in that area?
Which part of the meninges has fewer trabeculae in the spinal cord, leading to easier differentiation from the pia mater in that area?
What is the connective tissue component of the arachnoid continuous with below it?
What is the connective tissue component of the arachnoid continuous with below it?
What type of connective tissue surrounds the trabeculae within the arachnoid?
What type of connective tissue surrounds the trabeculae within the arachnoid?
What is the main function of the BBB?
What is the main function of the BBB?
Which structure in the brain does NOT have the blood-brain barrier?
Which structure in the brain does NOT have the blood-brain barrier?
Which component is responsible for having tight junctions in the BBB?
Which component is responsible for having tight junctions in the BBB?
What type of substances pass through the BBB via diffusion?
What type of substances pass through the BBB via diffusion?
Which structure around the brain ventricles allows certain molecules to affect brain function?
Which structure around the brain ventricles allows certain molecules to affect brain function?
What type of edema can be caused by breaking endothelial cell tight junctions?
What type of edema can be caused by breaking endothelial cell tight junctions?
Which ions have specific transport mechanisms across the BBB?
Which ions have specific transport mechanisms across the BBB?
What role do pericytes play in the BBB?
What role do pericytes play in the BBB?
What effect do hyperosmolar solutions (e.g., mannitol) have on the blood-brain barrier?
What effect do hyperosmolar solutions (e.g., mannitol) have on the blood-brain barrier?
Where is the choroid plexus mainly found in the brain?
Where is the choroid plexus mainly found in the brain?
What happens if there is a decrease in cerebrospinal fluid (CSF) absorption during fetal development?
What happens if there is a decrease in cerebrospinal fluid (CSF) absorption during fetal development?
What is the main function of the choroid plexus in relation to water?
What is the main function of the choroid plexus in relation to water?
What is the composition of cerebrospinal fluid (CSF) in terms of ions?
What is the composition of cerebrospinal fluid (CSF) in terms of ions?
What is the role of CSF in the central nervous system (CNS)?
What is the role of CSF in the central nervous system (CNS)?
Which type of cells are abundant in cerebrospinal fluid (CSF)?
Which type of cells are abundant in cerebrospinal fluid (CSF)?
Where can CSF be found in the human nervous system?
Where can CSF be found in the human nervous system?
What type of collagen is found in the external lamina surrounding each Schwann cell?
What type of collagen is found in the external lamina surrounding each Schwann cell?
What is the name of the structures that contain Schwann cell cytoplasm and allow for renewal of membrane components in the myelin sheath?
What is the name of the structures that contain Schwann cell cytoplasm and allow for renewal of membrane components in the myelin sheath?
What is the role of the contact between interdigitating processes of Schwann cells and the axolemma at the nodal gap?
What is the role of the contact between interdigitating processes of Schwann cells and the axolemma at the nodal gap?
Which stain color is used to highlight collagen in the endoneurium surrounding Schwann cells?
Which stain color is used to highlight collagen in the endoneurium surrounding Schwann cells?
What fills the spaces called Schmidt-Lanterman or myelin clefts within the myelin sheath?
What fills the spaces called Schmidt-Lanterman or myelin clefts within the myelin sheath?
What is depicted in the lower diagram that shows ultrastructure?
What is depicted in the lower diagram that shows ultrastructure?
What barrier function does the basal lamina around Schwann cells provide over the nodal gap?
What barrier function does the basal lamina around Schwann cells provide over the nodal gap?
