Human Brain And Neuron Anatomy — a labelled NEET Biology diagram with a definitions lexicon.
Human Brain and Neuron Anatomy Labelled parts: Human brain: sagittal section, Cerebrum, Frontal lobe, Corpus callosum, Parietal lobe, Temporal lobe, Hypothalamus, Occipital lobe, Thalamus, Cerebellum, Midbrain, Pons, Medulla oblongata, Neuron structure, Dendrites, Nucleus, Nissl granules, Axon, Myelin sheath, Node of Ranvier, Synaptic knob. It is a large bundle of nerve fibers (axons) that connects the left and right cerebral hemispheres, allowing them to communicate. FYI: Damage to the corpus callosum can result in severe communication deficits between the two hemispheres. This structure is located at the back of the brain and is crucial for coordinating voluntary movements, maintaining posture, and balance. FYI: The cerebellum receives input from sensory organs and helps regulate motor learning and fine motor skills. It is part of the brainstem and controls vital involuntary functions necessary for survival, such as breathing, heart rate, and blood pressure. FYI: Damage to the medulla oblongata can lead to respiratory arrest or cardiac failure. These are small gaps found along myelinated axons where the electrical impulse (action potential) 'jumps' from one node to the next. FYI: Saltatory conduction, the rapid transmission of action potentials, occurs at the Nodes of Ranvier, increasing nerve conduction speed. These are aggregates of rough endoplasmic reticulum (RER) found in the cytoplasm of neuronal cell bodies (soma). FYI: They indicate high levels of protein synthesis and are characteristic features of active neurons. This is the terminal end of an axon that forms the synapse, containing synaptic vesicles filled with neurotransmitters. FYI: The release of neurotransmitters into the synaptic cleft is triggered by the arrival of an action potential at the axon terminal.