1.2 Overview of the Nervous System

• The nervous system is an intricate network that collects, processes, and transmits information
• The peripheral nervous system (PNS) carries sensory and motor information to and from the CNS
• The CNS acts as the information processing and control center
• What type of information does the spinal cord transmit to the brain?

  Sensory information
• The spinal cord transmits motor commands from the brain to the body
• The brain acts as the central processing unit of the nervous system and is responsible for higher-order functions like cognition
• The peripheral nervous system consists of two main divisions: the somatic nervous system and the autonomic nervous system.
• What type of bodily functions does the autonomic nervous system regulate?

  Involuntary
• What are the two subdivisions of the autonomic nervous system?

  Sympathetic and parasympathetic
• The sympathetic and parasympathetic nervous systems work together to maintain homeostasis


  True
• What are the two divisions of the nervous system, and what are their main functions?

  CNS and PNS; process and transmit information
• What type of information does the spinal cord transmit between the brain and the peripheral nervous system?

  Sensory and motor information
• The autonomic nervous system regulates breathing without conscious thought
• Match the nervous system with its control type and primary function:

  Somatic ↔️ Voluntary: Controls skeletal muscles

  Autonomic ↔️ Involuntary: Regulates internal organs
• What happens to the body when the parasympathetic nervous system is activated?

  Slows heart rate
• What is the primary function of the parasympathetic nervous system during rest-and-digest activities?

  Lowers blood pressure
• Match the nervous system division with its primary function:

  Central Nervous System (CNS) ↔️ Processes information and initiates responses

  Peripheral Nervous System (PNS) ↔️ Carries sensory and motor information
• What type of control does the somatic nervous system have over bodily functions?

  Voluntary
• The somatic nervous system manages involuntary functions necessary for maintaining homeostasis.

  False
• Match the nervous system division with its primary function:

  Somatic ↔️ Controls skeletal muscles

  Autonomic ↔️ Regulates internal organs
• The parasympathetic nervous system slows heart rate and increases digestion.


  True
• What are the two main divisions of the nervous system?

  CNS and PNS
• The spinal cord coordinates basic reflexes and functions like breathing.


  True
• Match the nervous system component with its example:

  PNS ↔️ Waving your hand

  CNS ↔️ Touching a hot stove

  ANS ↔️ Heart beating
• What are the two main divisions of the nervous system?

  Central and peripheral
• What are the two components of the central nervous system (CNS)?

  Brain and spinal cord
• What is the role of the peripheral nervous system (PNS)?

  Communication network
• The spinal cord coordinates basic reflexes and functions like breathing and blood pressure.


  True
• The spinal cord transmits sensory information to the brain and motor commands to the body


  True
• The somatic nervous system controls voluntary movements


  True
• The somatic and autonomic nervous systems are divisions of the peripheral nervous system.
• The sympathetic nervous system prepares the body for fight-or-flight responses.
• The nervous system is an intricate network that collects, processes, and transmits information throughout the body.
• The CNS processes reflex actions without involving the brain

  True
• Match the nervous system division with its control:

  Somatic Nervous System ↔️ Voluntary control

  Autonomic Nervous System ↔️ Involuntary control
• The somatic and autonomic nervous systems are both divisions of the central nervous system.

  False
• The autonomic nervous system has two main subdivisions: sympathetic and parasympathetic
• Order the physiological responses of the sympathetic nervous system during a fight-or-flight situation:

  1️⃣ Increases heart rate

  2️⃣ Dilates pupils

  3️⃣ Reduces digestion
• The central nervous system includes the brain and spinal cord.


  True
• The brain is responsible for higher-order functions like motor control