Brain Sections: Locating Key Structures
The brain is broadly divided into the forebrain, midbrain, and hindbrain. The forebrain further differentiates into the telencephalon and the diencephalon.
Telencephalon Components
The Telencephalon is the largest division of the brain and forms the cerebrum. It is responsible for higher-level functions.
- Key structures within the telencephalon include the cerebral cortex, the hippocampus and amygdala (components of the limbic system), the basal ganglia, and the corpus striatum.
Other Brain Sections
- Diencephalon: Includes the thalamus and hypothalamus.
- Midbrain: Involved in vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.
- Hindbrain: Includes the cerebellum, pons, and medulla oblongata; crucial for autonomic functions and coordination.
Conclusion
Based on neuroanatomy, the limbic system, basal ganglia, and corpus striatum are major components derived from the Telencephalon.
Important Questions from Nervous system
Which one of the following synaptic vesicle proteins is involved in tethering of the vesicle to the cytoskeletal system in the nerve terminus?
In the nervous system, the action potential is generated at the axon hillock in physiological conditions and it is conducted to the terminal end of axon. The location specific origin of action potential and its direction-specific conduction are explained by a researcher in the following proposed statements:
A. The membrane of axon hillock has highest threshold for the generation of action potential
B. The membrane of axon hillock contains large numbers of voltage-gated Na+ channels and that makes it more excitable
C. The propagating action potential in the middle of the axon cannot generate another action potential in the direction of cell body since a large fraction of voltage-gated Na+ channels in the preceding portion is voltage inactivated
D. As the number of voltage-gated Na+ channels is less in the preceding portion of axonal membrane, the propagating action potential in the middle of the axon cannot generate another action potential in the direction of cell body.
Which one of the following combinations represents both correct explanations?
Which one of the following is NOT released by sympathetic preganglionic neurons?
The time taken by synaptic vesicles to travel from the soma of a motor neuron in the spinal cord to its neuromuscular junction in a person’s foot by fast axon transport is about‐
The release of which neurotransmitter from the rods of retina is reduced when light strikes its outer segment?
