By Rob Nagel, Rob Nagel, Betz Des Chenes
How do our organs interact to maintain us residing and respiring? How can we retain bodies fit? scholars searching for details at the human physique will spend hours with this attention-grabbing source. Body by way of Design, U·X·L®'s 4 colour product at the physique and its structures, contains entries that specify the circulatory process, digestive procedure, the endocrine process, muscular, skeletal and fearful platforms, the distinctive senses and lots more and plenty extra. every one access comprises:
- An evaluation of the system's objective
- Glossaries for procedure parts and diseases
- Descriptions or organs and methods
- Ailments linked to the procedure
- Tips on well-being
Sidebars with biographies and fascinating evidence are integrated, as are greater than one hundred forty colour and black-and-white images and illustrations, an summary essay, basic bibliography and a cumulative index. (20010201)
Read Online or Download U.X.L Complete Health Resource. Body by Design 2 PDF
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Additional info for U.X.L Complete Health Resource. Body by Design 2
Example text
When the impulse or electrical current has reached the terminal branches or end of the axon, it stimulates the branches to release chemicals known as neurotransmitters. As their name suggests, neurotransmitters are the mechanisms by which a nerve impulse travels from one neuron to another or to body cells. Once released from an axon, a neurotransmitter drifts across the synapse to a second neuron. When it has reached that cell, it attaches itself to specialized parts, called receptors, in the dendrites of the second neuron.
The “wings” are the cerebellar hemispheres, and each consists of lobes that have distinct grooves or fissures. The cerebellum controls the actions of the muscular system needed for movement, balance, and posture. All motor activity in the body depends on the cerebellum. THE CEREBELLUM. the nervous system T H E L I M B I C S Y S T E M . The limbic system is a horseshoe-shaped area of the brain located along the border between the cerebrum and diencephalon. Key structures of the limbic system include the almond-shaped amygdala and the sea horse-shaped hippocampus.
Neuroglia are abundant, accounting for some ten times the number of neurons. An example of neuroglia in the CNS are oligodendrocytes. SUPPORTING CELLS. the nervous system In the PNS, neurons are supported by Schwann cells and satellite cells (which form around the cell body to protect and cushion it). Nerves A nerve is a bundle of axons in the PNS. Each axon or nerve fiber is wrapped in delicate connective tissue. Groups of axons are then bound in coarser connective tissue to form bundles. Finally, many bundles are bound together (along with blood vessels to nourish the axons and Schwann cells) by even tougher connective tissue to form a nerve.
