Question 1

You are listening to a lecture.Then the bell rings in the hallway.In order to hear this stimulus, _____ nerves must carry electrochemical messages from your ears to your brain.

Accepted Answer

Afferent nerves carry sensory information from the sensory organs (in this case, the ears) to the brain. The olfactory nerves are responsible for the sense of smell and are not involved in hearing. Efferent nerves carry messages from the brain to the muscles and glands. Pyramidal nerves are a type of efferent nerve that are involved in voluntary movement.

Question 2

The _____ system is the body's electrochemical communication circuitry.

Accepted Answer

The nervous system is responsible for transmitting electrical and chemical signals throughout the body, allowing for communication between different parts of the body and the brain. The other options (pulmonary, endocrine, and respiratory) are all important systems in the body, but they are not directly involved in electrochemical communication.

Question 3

The function of sensory nerves of the somatic nervous system is to

Accepted Answer

Sensory nerves of the somatic nervous system are responsible for carrying information from the skin and muscles to the central nervous system (CNS) about conditions such as pain and temperature. This helps the body to respond and react appropriately to different stimuli.

Question 4

The somatic nervous system consists of motor nerves, whose function is to _____.

Accepted Answer

The somatic nervous system is responsible for voluntary actions and controls the skeletal muscles through motor nerves, which tell the muscles what to do. Option A is partially correct, as the somatic system can mobilize the body for action in a dangerous situation, but that is not the primary function of the system. Option C is incorrect, as the somatic nervous system does not control stress levels, and option D refers to the sensory nerves, which are not part of the somatic nervous system.

Question 5

Which of the following is one of the functions of the sympathetic nervous system?

Accepted Answer

The sympathetic nervous system is responsible for the fight-or-flight reaction, which involves preparing the body to respond to stress or danger by increasing heart rate, blood pressure, and respiration rate, among other things.

Question 6

The _____ connects the brain and spinal cord to the rest of the body.

Accepted Answer

The peripheral nervous system (PNS) consists of all the nerves that lie outside the brain and spinal cord. It is responsible for connecting the brain and spinal cord to the rest of the body, including organs, muscles, and tissues, and transmitting information between them. Therefore, option B is the most appropriate choice. Option A (central nervous system) refers to the brain and spinal cord only, and options C (limbic system) and D (endocrine system) are specific parts of the nervous system that have more specialized functions.

Question 7

Which of the following characteristics of the nervous system best reflects the brain's ability to coordinate information from all five senses?

Accepted Answer

Integration refers to the ability of the nervous system to process and coordinate information from different sensory inputs, allowing for a unified perception of the environment. This is key in the brain's ability to coordinate information from all five senses. Complexities, adaptability, and electrochemical transmission are also important characteristics of the nervous system, but they are not specifically related to sensory integration.

Question 8

Which of the following essential body functions are under the control of the autonomic nervous system?

Accepted Answer

The autonomic nervous system controls functions such as heart rate, breathing, and digestion, which are essential body functions related to maintaining homeostasis. The reproductive system is controlled by the endocrine system and the excretory system is controlled by the urinary system. Sensory functions such as vision and hearing are under the control of the sensory systems (vision system and auditory system).

Question 9

The somatic nervous system and autonomic nervous system are components of the

Accepted Answer

The somatic nervous system and autonomic nervous system are both components of the peripheral nervous system, which includes all the nerves and ganglia outside of the brain and spinal cord. The somatic nervous system is responsible for voluntary movements and sensation, while the autonomic nervous system controls involuntary processes such as heart rate, digestion, and respiration.

Question 10

The sympathetic nervous system and parasympathetic nervous system are components of the

Accepted Answer

The sympathetic and parasympathetic nervous systems are both components of the autonomic nervous system, which controls involuntary bodily functions such as heart rate, digestion, and breathing. The central nervous system is made up of the brain and spinal cord, the endocrine system is made up of glands that release hormones into the bloodstream to regulate bodily functions, and the somatic nervous system controls voluntary movements and sensation.

Question 11

Ashley, a secretary at Plato Inc., is typing on her computer, talking on the phone, and handing some papers to her colleague simultaneously.Which of the following characteristics of the nervous system is best illustrated in this scenario?

Accepted Answer

The scenario best illustrates the complexity of the nervous system, as Ashley is able to perform multiple tasks simultaneously, indicating the ability of the nervous system to handle a wide range of inputs and outputs in a coordinated manner.

Question 12

Information from the brain and spinal cord to the muscles is sent through _____, thus enabling the body to move.

Accepted Answer

Efferent nerves transmit information from the central nervous system to the muscles, allowing for voluntary and involuntary movements. Afferent nerves, on the other hand, transmit sensory information from the body to the central nervous system. Auditory nerves and olfactory nerves are part of the sensory system and transmit information related to hearing and smell, respectively.

Question 13

The brain and spinal cord make up the

Accepted Answer

The brain and spinal cord are the two main components of the central nervous system, which is responsible for processing and coordinating information throughout the body. Therefore, the best choice is B - central nervous system.

Question 14

The term plasticity refers to the

Accepted Answer

Plasticity in neuroscience refers to the brain's ability to modify and change its structure and function in response to various experiences, such as learning and injury. This includes the ability to create new neural pathways and connections between neurons, as well as the ability to reorganize existing ones.

Question 15

Stand-up comedians who improvise constantly while on stage are demonstrating their ability to change according to the environment.Which of the following characteristics of the nervous system is most likely playing a predominant role in their adaptability?

Accepted Answer

Adaptability refers to the ability of the nervous system to change and adjust in response to new or changing situations. Improvising comedians need to constantly adapt to their environment by responding to audience reactions, changing their jokes or delivery, and shifting their attention between different aspects of their performance. This requires the nervous system to constantly adjust its synaptic connections, modify existing neural networks, and create new pathways to integrate new information and stimuli. Resting potential, reuptake, and polarization are important functions of the nervous system, but they are not directly related to the ability to adapt to new situations.

Question 16

You are walking to school when you encounter a barking dog.You start sweating and contemplate whether you should run away.Which nervous system is primarily responsible for this "fight-or-flight" reaction?

Accepted Answer

The sympathetic nervous system is responsible for the "fight-or-flight" response, which prepares the body to either fight or flee in response to a perceived threat. This response involves physiological changes such as increased heart rate, rapid breathing, and sweating, which help to prepare the body for rapid action.

Question 17

The function of the _____ is to take messages to and from the body's internal organs, monitoring such processes as breathing, heart rate, and digestion.

Accepted Answer

The autonomic nervous system is responsible for regulating unconscious bodily functions such as breathing, heart rate, and digestion. It carries messages to and from the body's internal organs. The other choices listed do not specifically regulate these functions.

Question 18

Your brain has instructed your body muscles to move so that you avoid burning your hand on a hot stove.Which type of nerves carried the information from your brain to your muscles so that you could avoid getting burned?

Accepted Answer

Efferent nerves are responsible for carrying information from the brain to the muscles, allowing them to move and respond to stimuli such as heat. Afferent nerves, on the other hand, carry sensory information from the body to the brain. Olfactory nerves are responsible for sense of smell, and auditory nerves are responsible for hearing.

Question 19

Plasticity best reflects which of the following characteristics of the nervous system?

Accepted Answer

Plasticity refers to the ability of the nervous system to change and adapt in response to experiences, learning and injury. It is an aspect of the nervous system's adaptability.

Question 20

The lecture you were listening to is over.The bell that rang in the hall signaled the end of class.You get up, pick up your things, and walk out the classroom door.Which kind of nerves sent the signals from your brain to your muscles to initiate your physical movements?

Accepted Answer

Efferent nerves transmit signals from the brain to the muscles for movement. The other options, afferent nerves transmit signals from the sensory organs to the brain, pyramidal nerves control voluntary motor movements, and olfactory nerves control the sense of smell, are not the nerves responsible for initiating physical movements in this scenario.

Quiz 2: The Brain and Behavior