What is biological psychology?
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Biological psychology is the study of physiological, evolutionary, and developmental mechanisms of behavior and experience.
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What is biological psychology?
Biological psychology is the study of physiological, evolutionary, and developmental mechanisms of behavior and experience.
What are the estimated numbers of neurons in the cerebral cortex, spinal cord, and cerebellum?
There are approximately 12-15 billion neurons in the cerebral cortex, 1 billion neurons in the spinal cord, and 70 billion neurons in the cerebellum.
What is the primary function of neurons and their components?
The primary function of neurons is to receive information and transmit it to other cells. The axon transfers nerve impulses from the soma, dendrites transfer nerve impulses to the soma, and presynaptic terminals release neurotransmitters to communicate with other neurons.
What is the role of the cell membrane in a neuron?
The cell membrane protects and holds the cell content while allowing for chemical transfer.
What are the three major types of neurons and their functions?
The three major types of neurons are sensory neurons, which respond to specific types of stimulation; motor neurons, which conduct impulses from the soma to muscle or gland cells; and interneurons, which facilitate communication between sensory and motor neurons by forming circuits.
What happens when a person sees a glass of water in terms of sensory nerves and the central nervous system?
The sensory nerves relay the sensory information toward the central nervous system, and the motor output from the central nervous system allows the person to lift the glass to take the drink.
What triggers the firing of an action potential in a neuron and what is the state of a neuron when it is not excited?
An action potential is triggered when the neuron is stimulated or excited, and the state of a neuron when it is not excited is called resting potential.
What occurs at the synapses during communication among nerve cells?
Chemical events take place, where neurotransmitters are released from one neuron to another, affecting the second neuron and potentially exciting it to fire an action potential.
What are the two main components of the Central Nervous System (CNS) and what does the Peripheral Nervous System (PNS) consist of?
The two main components of the CNS are the brain and spinal cord, while the PNS consists of nerves outside the brain and spinal cord.
What functions does the nervous system control and how does the spinal cord contribute to reflex actions?
The nervous system controls motor functions of voluntary and involuntary muscles, and the spinal cord is responsible for some reflexes, such as the knee-jerk reflex.
What is the role of the autonomic nervous system and its two divisions?
The autonomic nervous system receives information from and sends commands to the heart, intestines, and other organs. The sympathetic nervous system prepares the body for vigorous activities, while the parasympathetic nervous system promotes energy-conserving functions.
What are the main components of the brain and their functions?
The midbrain plays a role in vision, hearing, and motor control; the medulla controls autonomic functions such as breathing and heart rate; the cerebellum coordinates voluntary movements and balance; and the thalamus acts as a relay station for sensory information.
What is the function of the limbic system and its main components?
The limbic system is associated with motivation, emotion, drives, and aggression, and its main components include the hippocampus and amygdala, which are involved in memory and emotional processing.
What is the primary function of the hippocampus and amygdala?
The hippocampus consolidates short-term memory into long-term memory and plays a role in navigation, while the amygdala is involved in feelings and expressions of emotions, especially fear.
What are the main components of the forebrain and their functions?
The forebrain includes the cerebral cortex, which is responsible for higher brain functions, and the corpus callosum, which connects the left and right hemispheres.
What are the four lobes of the brain and their primary functions?
The four lobes of the brain are the Occipital lobe (vision), Frontal lobe (higher cognitive functions), Parietal lobe (sensory information processing), and Temporal lobe (auditory processing and language comprehension).
What is the primary function of the prefrontal cortex and the consequences of its damage?
The prefrontal cortex is responsible for higher-order activities such as logical thinking and planning, and damage to it can lead to memory failure and difficulties in understanding emotions.
What is behavior genetics and how do genes and the environment interact?
Behavior genetics is the study of how genes and environmental factors influence behavior, with a bidirectional relationship where environmental influences can impact genetics.
What do genotype and phenotype refer to?
Genotype refers to the genetic material inherited by an individual, while phenotype refers to the expressed genetic material, including observable behavior and physical characteristics, which depend on the interaction of genotype and environment.