Chapter 2: Brain Structure Flashcards
(25 cards)
Nervous system
Divided into 2 main systems, all of the body’s nerve and neural organs
Central Nervous System
Brain and spinal cord
Peripheral Nervous System
Controls body and responses
Contains somatic and autonomic systems
Autonomic NS
Self-governing, no active thinking to trigger, controls all reactions
Contains sympathetic and parasympathetic systems
Sympathetic NS
Controls arousal and fight-or-flight mechanism, stress
Parasympathetic NS
Rest and digest, relaxation
Franz Gall
Pioneer of phrenology
Phrenology
Study of the shape and distinctions of the skull, believed to have influenced personality before discredited
Basis for localization
Pierre Paul Broca
Studied language processing and speech through brain lesions
Broca’s Area
Region in the frontal lobe, left hemisphere linked to language processing and speech production
Lateralization
2 hemispheres of the brain that look similar, L is more dominant for language, R is more dominant for abstract though and moral reasoning
Corpus Callosum
Connection between two hemispheres that transmits message between
Michael Gazzaniga
Worked with split-brain patients, researched how information was sent and received through the brains to hemispheres
Direction of thought
Hindbrain to midbrain to forebrain
Gyri
“Peaks” of brain anatomy
Sulci
“Valleys” of brain anatomy
Fissures
Deep indentations on brain’s surface, can indicate different structures
Forebrain
Consists of cerebral cortex and limbic system
Divided into telencephalon and diencephalon, controls higher-order thinking
Telencephalon
Part of forebrain that includes cortex, amygdala, hippocampus, basal ganglia
Diencephalon
Part of forebrain that includes thalamus, hypothalamus, and pituitary gland
Frontal Lobe
Part of cerebral cortex that focuses on higher-order thinking, decision-making, and reason
Parietal Lobe
Part of cerebral cortex that includes primary motor cortex and somatosensory cortex
Focuses on sensory processing in and out of body
Temporal Lobe
Part of cerebral cortex that contains primary auditory cortex
Focuses on hearing, language, emotion, and memory
Occipital Lobe
Part of cerebral cortex that focuses on vision