Chapter 1 - Biology and Behavior Flashcards
Franz Gall
Developed doctrine of phrenology
Phrenology
If a particular trait was well-developed then the part of the brain responsible for that trait would expand
Pierre Flourens
Studied functions of the major sections of the brain
Extirpation (ablation)
Parts of the brain are surgically removed and the consequences are observed
William James
Founder of American Psychology
Functionalism
How mental processes help individuals adapt to their environment
John Dewey
Credited with the landmark article on functionalism; argued for studying the entire organism as a whole
Paul Broca
Correlated pathology with specific brain regions
Hermann von Helmholtz
Measured speed of nerve impulse
Sir Charles Sherrington
Inferred existence of snyapses
3 kinds of nerve cells
Sensory neurons, motor neurons, interneurons
Sensory neurons (afferent)
Transmit sensory info from receptors to spinal cord and brain
Motor neurons (efferent)
Transmit motor info from brain to muscles
Interneurons
Found between other neurons in brain and spinal cord; linked to reflexive behavior
Reflex arcs
Neural circuits that control reflexive behavior
Central Nervous System (CNS)
Brain and spinal cord
Peripheral Nervous System (PNS)
Nerve tissue and fibers
- 31 spinal nerves
- 12 cranial nerves
Somatic Nervous System
Sensory and motor neurons distributed throughout the skin, joints, and muscles
Autonomic Nervous System (ANS)
Manages involuntary muscles associated with many internal organs and glands
- Regulates heartbeat,respiration, digestion, and glandular secretions
- Regulates temperature
Parasympathetic Nervous System
Role is to conserve energy
- Associated with resting and sleeping states, managing digestion
- Acetylcholine is responsible for responses
Sympathetic Nervous System
Activated by stress; “fight or flight”
Meninges
Thick, three-layered sheath of connective tissue
Cerebrospinal fluid
Aqueous solution that nourishes the brain and spinal cord and provides protective cushion
Meninge layers (inner to outer)
pia mater, arachnoid mater, dura mater