The Nervous System The Neuron The neuron is
- Slides: 22
The Nervous System
The Neuron • The neuron is the basic unit of the nervous system • Central Neurons in CNS • Peripheral Neurons in PNS
The Peripheral and Central Nervous Systems ®The peripheral nervous system carries information to and from the nervous system ®The somatic nervous system is the part of the peripheral nervous system that carries information to skeletal muscles
The Peripheral and Central Nervous Systems • The sympathetic nervous system is the part of the autonomic nervous system that becomes most active during emergency situations
The Peripheral and Central Nervous Systems • The parasympathetic nervous system is the part of the autonomic nervous system that controls the ongoing maintenance processes of the body
Figure 2. 8 The Basic Divisions of the Nervous System
Five Principles of Brain Organization 1. The hindbrain, midbrain, and forebrain each involve several brain regions that carry out different types of information processing 2. There are identifiable neural pathways projecting from one area to the next
Five Principles of Brain Organization 3. Each part of the brain projects to the next in an orderly fashion creating organized regions that can be mapped 4. The brain is hierarchically organized 5. The brain systems are organized so that one side of the brain controls the other side of the body
Figure 2. 11 The Hindbrain
The Midbrain • The midbrain receives afferent signals from other parts of the brain and relays the information to a more complex part of the brain
The Forebrain • The forebrain is the most complicated and advanced of the three divisions of the brain • The thalamus sends information to other parts of the brain • The hypothalamus affects many complex behaviours
Figure 2. 12 The Forebrain
The Forebrain • The limbic system is an interconnected group of structures that influences emotions and memory • The hippocampus is involved in new learning • The amygdala is involved in emotional control
Figure 2. 13 Principal Structures of the Limbic System
The Forebrain • The basal ganglia controls movement and posture • The corpus callosum provides crosshemisphere connections
The Cortex • The cortex is divided into a series of lobes
The Cortex • The frontal lobe is concerned with directing thought processes • The parietal lobe integrates visual input • The occipital lobe processes visual input • The temporal lobe is important for language comprehension
Figure 2. 14 The Cortex and the Lobes of the Brain
Monitoring Neural Activity • Single-unit recording measures activity in individual neurons • Electroencephalography (EEG) measures electrical activity in the nervous system
Monitoring Neural Activity • CT scans are computer-enhanced X- rays • PET tracks radioactive markers that have been injected into the bloodstream
Monitoring Neural Activity • MRI uses magnetic fields • f. MRI measures brain activity as it takes place
- Neuronal pool
- Fundamentals of the nervous system and nervous tissue
- Processes of a neuron
- Nervous system and digestive system
- Endocrine system vs nervous system
- Mechanism of hormone action
- Adh function
- Chemical messengers of the nervous system
- Roundworms segmentation
- The nervous system is made up of
- Primary functions of the nervous system
- Nervous system learning objectives
- Chapter 7 the nervous system
- What is stimuli in nervous system
- Objectives of nervous system
- Autonomic nervous system visceral
- Sympathetic nervous system def
- The spinal nerves
- Sns pg
- The nervous system brain scienstructable
- Autonomic nervous system skeletal muscle
- Nematoda
- Phylum arthropoda characteristics