Who is considered the father of plate tectonic theory?

1 answer:

5 0

Alfred Wegener is often credited as the father of the tectonic playe theory. He got this title when he noticed that the eastern coast of South America and the western coast of Africa appear to fit well together like a puzzle. He used fossil and rock samples from both continents to prove his claim

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Hyperextension bends a joint in the opposite direction as flexion. True or false?

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<span>This is true. Extension is the opposite of flexion, they're like antonyms, so hyperextension would be an extension even beyond that, or in this case, it would be in the opposite direction of the flexion of a joint. That is why the answer to this question should be true.</span>

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Horizontal or transverse or axial cut is if you cutting the object with the horizontal plane. The cut would look like ( -- ). Vertical or longitudinal is cutting in the vertical plane. The cut would look like ( | )
<span>There is also coronal cuts which were a cut with direction from front to back. </span>

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Which of the following statements best describes the role of hormones in the body? Hormones send chemical signals throughout the

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Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus elicits the release of a substance; once the substance reaches a certain level, it sends a signal that stops further release of the substance. In this way, the concentration of hormones in blood is maintained within a narrow range. For example, the anterior pituitary signals the thyroid to release thyroid hormones. Increasing levels of these hormones in the blood then give feedback to the hypothalamus and anterior pituitary to inhibit further signaling to the thyroid gland, as illustrated in Figure 18.14. There are three mechanisms by which endocrine glands are stimulated to synthesize and release hormones: humoral stimuli, hormonal stimuli, and neural stimuli.

Explanation:

Hyperthyroidism is a condition in which the thyroid gland is overactive. Hypothyroidism is a condition in which the thyroid gland is underactive. Which of the conditions are the following two patients most likely to have?

Patient A has symptoms including weight gain, cold sensitivity, low heart rate and fatigue.

Patient B has symptoms including weight loss, profuse sweating, increased heart rate and difficulty sleeping.Humoral Stimuli

The term “humoral” is derived from the term “humor,” which refers to bodily fluids such as blood. A humoral stimulus refers to the control of hormone release in response to changes in extracellular fluids such as blood or the ion concentration in the blood. For example, a rise in blood glucose levels triggers the pancreatic release of insulin. Insulin causes blood glucose levels to drop, which signals the pancreas to stop producing insulin in a negative feedback loop.

Hormonal stimuli refers to the release of a hormone in response to another hormone. A number of endocrine glands release hormones when stimulated by hormones released by other endocrine glands. For example, the hypothalamus produces hormones that stimulate the anterior portion of the pituitary gland. The anterior pituitary in turn releases hormones that regulate hormone production by other endocrine glands. The anterior pituitary releases the thyroid-stimulating hormone, which then stimulates the thyroid gland to produce the hormones T3 and T4. As blood concentrations of T3 and T4 rise, they inhibit both the pituitary and the hypothalamus in a negative feedback loop.

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