Biology > EXAM > Straighterline BIO 201L Lab 8 Worksheet Lab 8 The Nervous System 2022 | Complete | 100% Correct Answ (All)

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Straighterline BIO 201L Lab 8 Worksheet Lab 8 The Nervous System 2022 | Complete | 100% Correct Answers

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Pre-Lab Questions: ”1. What is the primary function of the nervous system?” Nervous sytem primary function involves preserving body homeostasis and sensing stimuli through assembling and proces ... sing sensory signals in both internal and external environments of the body. ”2. Why does the cerebral cortex contain so many folds? ” To enhance the surface area and fit in the skull volume, the cerebral cortex has many folds. ”3. What is a nerve impulse? ” Nerve impulse entails an electrical signal transmitted down nerve fibers from an axon terminal containg electrical depolarization wave which reverses any potential differences acostumed in the membranes of nerve cells ”4. What are Schwann cells and what do they form? ” Schwann cells represents the glial cells responsible for keeping alive the peripheral nerve fibers through supporting the neurons by sorounding and insulating them. They fomulate spiral layers across the myelinated nerve fiber in formyelin sheath and nodes of ranvier. ”5. What is an all-or-none response? ” All-or-none response entails musle fiber or nerve reacting to stimulus response towards a stimulus during occassions where the stimulus or signal is greater than threshold potential and when lower, there is no response from the muscle fiber or nerve. ”6. What two effects might neurotransmitters have? ” Excitory neurotransmitters are responsible for exciting the brain while inhibitory neurotransmitters function to cool it. Experiment 1: Microscopic Anatomy of the Nervous System Post-Lab Questions ”1. Label the arrows in the slide images below based on your observations from the experiment. ” A- axon B- cell bodies C- myelinated axons D- myelin sheaths [Show More]

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