Nervous System Flashcards
1. Identify the major divisions of the nervous system 2. Review major lobes of the brain and their respective functions3. Define afferent and efferent fiber 4. Identify the major principles of the somatic and autonomic nervous system
What nervous system? Brain Brainstem: midbrain, pons, medulla Cerebellum Spinal Cord
Central Nervous System (CNS)
What nervous system?
Cranial nerves
Spinal nerves
Ganglia
Peripheral Nervous System (PNS)
What is the master organ of the CNS?
brain
Name the 4 parts of the brain
Cerebrum and its telencephalon
Diencephalon (thalamus/hypothalamus)
Brainstem
Cerebellum
Responsible for speech, language, thought, emotion, motor and sensory functions
Cerebrum and its telenchephalon
Relays information to appropriate brain centers for processing and controls the hormones secreted by the pituitary gland
Diencephalon (thalamus and hypothalamus)
Involuntary reflexes and crucial life functions such as heart rate, breathing, and blood pressure
Brainstem
Coordinates muscle movement and controls balance
Cerebellum
The cerebrum is composed of # major divisions
4
Name the divisions of the cerebrum
Frontal, temporal, parietal, occipital
Orbitofrontal cortex is the main area of inhibitions of impulsive behaviors
Frontal lobe
Pre-central gyrus: primary motor cortex
Frontal lobe
Broca’s area
located on the left side, enables us to form words
Interpretation of auditory information to enable us to understand words
Temporal
Main site of visual interpretation
Parietal lobe
Major role in pursuit eye movements (following an object as it moves) and saccadic eye movements
Parietal lobe
Primary sensory cortex
Parietal lobe
Contains the primary visual cortex that allows for vision to occur
Occipital lobe
brainstem attaches to the inferior aspect of the bran and is continuous with ________
spinal cord
Name the 3 parts of the brainstem
Midbrain
Pons
medulla oblongata
The brainstem sits in what region of the occipital bone?
clivus
“little brain”
cerebellum
responsible for balance and coordination. Gives smoothness to our movements
cerebellum
Are the vertebrates deep or superficial to the meninges
deep
The spinal cord runs down what foramen?
foramen magnum
The spinal cord ends at what vertebrate?
1st or 2nd lumbar
How many pairs of spinal nerves do we have at the end of the spinal cord?
31
The 31 spinal nerves exit via the _____ foramina
intervertebral
The pens can be subdivided into these two categories
Somatic and visceral
This system allows the organism to voluntarily interact with its environment
Somatic nervous system