Concept explainers
To draw:
The cross-section area of the spinal cord.
Introduction:
The spinal cord is a long thin, tubular bundle of nervous tissues, which will support cells that extends from the medulla oblongata in the brainstem. The spinal cord consists of nerves that carry impulses between the brain and the rest of the body.
To determine:
The type of neurons those are located in the spinal cord.
Introduction:
A neuron is a specialized cell that carries electrical impulses. Neurons are called as the basic units of the nervous system that plays important role in the brain. Neuronal pathway has different types of neurons such as interneuron, a motor neuron.
To determine:
The reason why spinal cord paralyzes the body below the cut.
Introduction:
The spinal cord is a long thin, tubular bundle of nervous tissues, which will support cells that extends from the medulla oblongata in the brainstem. Spinal cord plays an important role in the functioning of the body.
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Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
- The image below shows a cross section through the spinal cord. Use the diagram to answer the following questions. a. What makes up the grey matter of the spinal cord? Why is this material grey? b. What makes up the white matter of the spinal cord? Why is this material white? c. Describe the functions of the following:i. Dorsal Horn. Ventral Horn. On the diagram, draw the pathway of information travel into and out of the spinal cord during a spinal reflex arc.arrow_forwardDescribe the organization of the nervous system. Distinguish between the functions of neurons and neuroglia. Describe the cell body of a neuron. Distinguish among the functions of sensory neurons, interneurons, and motor neurons. Summarize the functions of each of the types of neuroglia (the exam will not ask about satellite cells) and describe how the myelin sheath is formed around a peripheral nervous system neuron. Explain why nerve impulse propagation is compromised in patients with multiple sclerosis. Distinguish between the composition of white matter and gray matter. Summarize neuron communication from the moment of receptor stimulation to the response of an effector, such as a muscle fiber, and define neurotransmitter, resting membrane potential, and current. Define electrochemical gradients and the term “polarized”, and describe the electrochemical basis of the resting membrane potential including the function of the sodium-potassium pump in maintaining the resting membrane…arrow_forwardDraw a cross-section of the spinal cord showing the gray and whitematter, dorsal and ventral roots, dorsal root ganglion, and spinalnerve. Indicate the general locations of pathways?arrow_forward
- Describe the spinal cord, depicting its extent, its composition of gray and white matter, and its spinal roots.arrow_forwardDifferentiate between cerebrum and spinal cord on the basis of arrangement of nerve cell.arrow_forwardPlease identity the structures on the following diagram of a neural pathway through the spinal cord.arrow_forward
- Name the nerves present in the brain and spinal cordarrow_forwardDifferentiate between cerebrum and spinal cord on the basis of arrangement of cytons and axons of neurons.arrow_forwardIn multiple sclerosis, nerve fibers in the CNS lose their myelin. Explain why this loss affects skeletal muscle function.arrow_forward
- A typical spinal nerve: Select one: a. normally divides into four branches that will supply the thoracic region, the abdominal region, the pelvic region and the limbs b. is covered by the connective tissue called epineurium c. attaches to the spinal cord via the dorsal root ganglia d. is protected by the dura, arachnoid and pia mater e. contains one nerve fibre and it's myelin sheatharrow_forwardState two reasons why rapidly growing brain cancers are composed of neuroglia rather than neurons.arrow_forwardBriefly explain the generation and conduction of nerve impulse.arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning