Neuroanatomy Flashcards
Explain neurons and structure?
Excitable cells
Cell body- soma
Dendrites
Axon nerve fibre
Spinal cord function
Provides 2 way conduction pathway to and from brain
Ascending and descending tracts
Major reflex centre
What is part of brain stem?
Medulla oblaganta
Pons
Mid brain
Cerebral hemisphere function
Our conscious mind- executive functions are carried out
Contains motor areas- control voluntary movement
Contains sensory areas- conscious awareness of sensation
Diencephalon function
Thalamus and hypothalamus
Function of thalamus
Processes info ascending to cerebral cortex and mediates sensation, motor activities
Hypothalamus
Main control centre of body in maintaining homeostasis
Mid brain
Part of brain stem
Controls sensory and motor functions - eye movement, visual and auditory reflexes
Pons
Conveys info between cerebral hemispheres and cerebellum
Contains respiratory nuclei with medulla nuclei to control respiration
Inspiration and expiration
Cerebellum
Not part of brain stem but connected to brain stem by fibre tracts
Modulates force and range of movement
Motor skills
Basal ganglia
Nuclei located deep in brain
Involved in regulation of voluntary motor movements and cognition and emotion
4 groups of neurons ( nuclei)
Striatum
Globus pallidus
Substantia nigra
Subthalamic nucleus
What does the ascending tract in spinal cord carry?
Sensory information to brain
What part of brain controls homeostasis ?
Hypothalamus
Degeneration of dopaminergic neurons in basal ganglia cause which disease?
Parkinson’s disease