AQA A Level Psychology - Biopsychology:

What components make up the central nervous system? - correct answers-the brain and spinal cord What is the function of the brain? - correct answers-- the brain is the centre of awareness - it controls perception and motor control - it is responsible for regulating bodily processes and maintaining homeostasis (e.g. maintaining temperature and hormone levels based on information from the peripheral nervous system) Describe the divisions of the nervous system. - correct answers- brain labelled - correct answers- What is the function of the spinal cord? - correct answers-Relays information between the brain and body Coordinates reflexes via reflex arc (automatic responses) Transmits sensory signals from body to brain Sends motor commands from brain to muscles/glands What is the structure of the peripheral nervous system? - correct answers-- Made of sensory and motor neurones Peripheral Nervous System (PNS): outside the brain and spinal cord Somatic Nervous System: controls voluntary movements; sensory & motor pathways Autonomic Nervous System (ANS): controls involuntary functions (e.g., heart rate, digestion) -> Sympathetic Nervous System: "fight or flight"; increases arousal ->Parasympathetic Nervous System: "rest and digest"; calms the body after arousal What is the function of the peripheral nervous system? - correct answers-Connects CNS to the body (limbs, organs, etc.) Transmits sensory information from body to CNS Carries motor commands from CNS to muscles/glands Controls voluntary movements (somatic nervous system) Regulates involuntary functions (autonomic nervous system: heart rate, digestion) The peripheral nervous system has two divisions, what are they? - correct answers-autonomic nervous system and somatic nervous system What is the role of the autonomic nervous system? - correct answers-- Made of sensory and motor neurones - Regulates involuntary functions (e.g., heart rate, breathing, digestion) - Maintains homeostasis (internal balance) - Divided into two branches: Sympathetic Nervous System: activates "fight or flight" response (increases heart rate, dilates pupils)