The Central Nervous System - The Brain (Leaving Cert Biology): Flashcards
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15 cards from this deck
Grey matter composition
Grey matter composition
Cell bodies and dendrites
White matter composition
White matter composition
Axons
What are the meninges?
What are the meninges?
Three layers of membranes surrounding the brain
Cerebrum function
Cerebrum function
Controls thought, memory, sensory activities & motor control
Which side of body does right brain hemisphere control?
Which side of body does right brain hemisphere control?
Left side (and vice versa)
Thalamus function
Thalamus function
Directs sensory messages to cerebrum
Hypothalamus regulates
Hypothalamus regulates
Homeostasis (internal environment)
Cerebellum function
Cerebellum function
Controls balance and muscular coordination
Medulla oblongata controls
Medulla oblongata controls
Involuntary functions like breathing & heart rate
What is the pituitary gland known as?
What is the pituitary gland known as?
Master hormone gland
Pineal gland secretes
Pineal gland secretes
Melatonin (regulates sleep/wake cycles)
How many pairs of spinal nerves?
How many pairs of spinal nerves?
31 pairs
Dorsal root carries
Dorsal root carries
Sensory neurons into spinal cord
Ventral root carries
Ventral root carries
Motor neurons away from spinal cord
Myelin sheath effect
Myelin sheath effect
Allows faster impulse transmission