Biology 101: Nervous System Flashcards Actual Exam 2024-2025 Questions And Accurate Answers

BIOLOGY 101: Nervous System Flashcards ACTUAL EXAM 2024-2025 QUESTIONS AND ACCURATE ANSWERS Q1 What is the main function of the nervous system? Answers: It controls the body through electrical and chemical signals. Its roles include both sensory and motor functions, as well as the control of basic life processes. The nervous system involves both voluntary and involuntary control. 2 Q What are the defining features of neurons? Answers:These are the functional units of the nervous system. They synapse with other neurons and transmit electrical and chemical signals. A neuron is broadly composed of: Dendrites, or branched structures that receive incoming signals A cell body, which contains the nucleus An axon, or projection along which the signal propagates away from the cell body 3 QName the two divisions of the nervous system. Answers: 1. central nervous system (CNS) 2. peripheral nervous system (PNS) 4 Q What two components does the central nervous system include? Answers: brain spinal cord 5Q Name two main structures of the peripheral nervous system. Answers: spinal nerves cranial nerves In the PNS, neurons are organized into peripheral structures called ganglia. 6 Q Name the two divisions of the peripheral nervous system. Answers: somatic nervous system autonomic nervous