General Brain Anatomy Flashcards
Larger portion of the brain
2 hemispheres
Cerebrum
Elevated ridges
Gryi
Shallow grooves
Sulci
Deeper grooves
Fissures
Carries info within and between hemisphere
Fibers
Connects areas of cerebral cortex within 1 hemisphere
Association fibers
Connects 1 hemisphere to the other
Commissural fibers
Connects the cerebrum to other parts of the CNS and spinal cord
Projection fibers
Consists of Medulla Oblongata, Pons and Midbrain
Brain Stem
Relay station of for ascending afferent and descending efferent motor tracts between the spinal cord and the brain (reticular process, respiratory nuclei, cardiac nuclei, coughing, gagging, swallowing and vomiting)
Medulla Oblongata
- Relay station from medulla to higher cortical structures of the brain
- Pontine nuclei
- Pons
2. Control of breathing
Nerve pathaway of the cerebral hemisphere (auditory and visual centers, cerebrak peduncles, corpora quadrigemina, cerebral aqueducts and substantia nigra)
Mid brain
Nucleus located between the cerebral peduncles and tegmentum
Substantia nigra
Controls eye movement, respiration, modulation of pain, patterns of sleep, cardiovascular function, digestion, levels of alertness and sex function
Reticular Formation
Connected through the brain stem through the pons
Contains Arbor vitae, Flocculorodular lobe, Vermis, Lateral hemispheres
Cerebellum
White matter of the cerebellum
Arbor vitae
Control of the balance and eye movement
Flocculorodular lobe
Controls posture, locomotion, fine motor coordination
Vermis
Planning, practicing, learning and complex movements
Lateral hemispheres
Between the brain stem and the cerebrum
Composed of: thalamus, subthalamus, epithalamus, epithalamus and hypothalamus
Diencephalon
Largest part. Receives info from most of the sensory neurons in the body. Plays role in emotions.
Medial geniculate nucleus receives info from auditory sensory nerves
Lateral geniculate
Thalamus
Motor functions and share info with….
Subthalamus
Has pineal body and habenular nuclei
Biological clock
Epithalamus
Major endocrine tissue, homeostatically irregulates many important physiological processes (temperature, water balance, metabolism, thirst, sex, appetite, pain, pleasure)
Hypoyhalamus