What are the 3 main divisions of the nervous system?
The central nervous system (CNS) is the brain and spinal cord, and the peripheral nervous system (PNS) is everything else (Figure 8.2).
What organs are involved in PNS?
The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions.
What division of the PNS peripheral nervous system sends motor information to effector organs?
Efferent division of the PNS The efferent division sends information from the nervous system to the organs of the body which then carry out the appropriate response. The efferent division is generally a link between the central nervous system and the effector organs so that the CNS can regulate the various responses.
What is the effector organ of the somatic nervous system?
The Autonomic nervous system is light myelinated or unmyelinated, conduction is much slower, the effectors of the ANS are smooth, cardiac, and glands. Somatic Nervous system heavily myelinated axons, extend from the CNS to the effector, rapid impulse conduction-skeletal muscles.
What are the two main divisions of the peripheral nervous system?
The peripheral nervous system itself is divided into two parts: the somatic nervous system and the autonomic nervous system.
What is the structure and function of the peripheral nervous system?
The peripheral nervous system consists of the nerves that branch out from the brain and spinal cord. These nerves form the communication network between the CNS and the body parts. The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system.
What is the main function of PNS?
The PNS has three basic functions: (1) conveying motor commands to all voluntary striated muscles in the body; (2) carrying sensory information about the external world and the body to the brain and spinal cord (except visual information: the optic nerves, which convey information from the retina to the brain, are in …
Which best describes the peripheral nervous system?
So, the correct answer is ‘System consisting of all nerves outside the brain and spinal cord’.
Which best describes a central and peripheral nervous system?
Which best describes the central and peripheral nervous systems? The central nervous system processes stimuli information the body receives, and the peripheral nervous system senses stimuli and carries out the reaction.
Which structure is at work when the body deals with reflex actions quizlet?
The Spinal Cord Functions to process reflexes, to integrate excitatory and inhibitory nerve impulses, provides a highway for carrying sensory nerve impulse to the brain, and motor nerve impulse from the brain to the spinal nerves.
Which is a function of the central nervous system quizlet?
The main functions of the central nervous system is to PROCESS information received through sensory systems and other parts of the body and to activate appropriate actions to the external/internal stimuli.
Which is an example of when Hector’s somatic sensory system is in control after a long run his body is sweating when jogging he sees an ice patch?
When jogging, he sees an ice patch and decides to change directions to a different route. Explanation: The body’s somatic sensory system refers to the voluntary control of the body movements. An example of this is the voluntary control of the skeletal muscles.
Which autonomic system is most likely to be dominant while someone is experiencing stress about an upcoming job interview quizlet?
Answer: The correct answer is Sympathetic nervous system. Sympathetic nervous system is the branch of Autonomic nervous system. It is activated in situations like emergency, anxiety, stress, and danger.
Which function does a neuron perform in a human body quizlet?
Neurons are the cells that transmit nerve impulses between parts of the nervous system. Dendrites are extensions leading toward cell body that receives signal from other neurons and send them to the cell body.
When Brian touches a hot object which are at work to help him react appropriately to protect himself?
Answer Expert Verified. When Brian touches a hot object, sensory neurons, brain, and motor neurons which are at work to help him react appropriately to protect himself.
What happens to the body when motor neurons are injured?
Lesions are areas of damage to motor neurons. Damage to upper motor neurons stops the signals your muscles need to move. When your muscles don’t move for a long time, they become weak and stiff. Over time, it can become harder to walk and control your movements.
Which function does a neuron perform in a human body?
Neurons are responsible for carrying information throughout the human body. Using electrical and chemical signals, they help coordinate all of the necessary functions of life.
What are the differences between a motor and sensory pathway select all that apply?
Select all that apply. -A motor pathway uses neurotransmitters, while a sensory pathway does not. -A motor pathway takes instruction from the brain, while a sensory pathway takes information to the brain. -A sensory pathway takes instruction from the brain, while a motor pathway takes information to the brain.
Can the brain grow new neurons?
The Adult Brain Does Grow New Neurons After All, Study Says – Scientific American.