Examples of dissociation curve in the following topics:
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- The lower areas of the curve show saturation when oxygen is unloaded into the tissues.
- The oxyhemoglobin dissociation curve can shift in response to a variety of factors.
- A change in the P50 of the curve is a sign that the dissociation curve as a whole has shifted.
- The oxygen–hemoglobin dissociation curve plots the percent hemoglobin saturation (y-axis) against the partial pressure of oxygen in the blood (PO2).
- The blue curve is standard curve, while the red and green curves are right and leftward shifts respectively.
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- As a result, the oxygen-binding curve of hemoglobin (also called the oxygen saturation or dissociation curve) is sigmoidal, or S-shaped, as opposed to the normal hyperbolic curve associated with noncooperative binding.
- This curve shows the saturation of oxygen bound to hemoglobin compared to the partial pressure of oxygen (concentration) in blood.
- That's because most carbon dioxide travels through the blood as a bicarbonate ion, which is the dissociated form of carbonic acid in solution.
- This dissociates in solution into bicarbonate and hydrogen ions, the driving force of pH in the blood.
- A reduction in the total binding capacity of hemoglobin to oxygen (i.e. shifting the curve down, not just to the right) due to reduced pH is called the Haldane effect.
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- The rate of dissociation between carbon monoxide and cytochrome oxidase is slow, causing a relatively prolonged impairment of oxidative metabolism.
- Influence of partial pressure of oxygen on the dissociation of oxygen from hemoglobin at 37 degrees Celsius.
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- The cervical curve covers the region between vertebrae C1 and T2, it is the least marked of all the spinal curves.
- The thoracic curve covers the region between vertebrae T2 and T12.
- The sacral curve begins at the sacrovertebral articulation, and ends at the point of the coccyx.
- The thoracic and sacral curves are termed primary curves because they alone are present during fetal life.
- The cervical and lumbar curves are secondary curves that are developed after birth; the former when the child is able to maintain an upright posture, the latter when the child begins to walk.
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- The cervical curve convexes forward and begins at the apex
of the odontoid (tooth-like) process.
- This curve is described as a lordotic
curve.
- The thoracic and sacral curvatures are termed primary curves because they are present in the fetus and remain the same in the adult.
- As the child grows,
lifts the head, and begins to assume an upright position, the secondary curves
(cervical and lumbar) develop.
- The lumbar curve forms between twelve to eighteen months when the
child begins to walk.
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- The ribs are long, curved bones that protect the lungs, heart, and other organs of the thoracic cavity.
- Ribs are long, curved bones that form the
rib cage surrounding the thorax.
- Finally, the shaft forms
the majority of the length of the rib as it curves around the thoracic cavity
forming the rib cage.
- Rib 1 is the shortest and most curved of
the ribs.
- The first thoracic vertebra has a rib attached to it that curves across to the sternum.
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- Dissociative amnesia results from a psychological cause as opposed to direct damage to the brain caused by head injury, physical trauma or disease, which is known as organic amnesia.
- Dissociative amnesia can include the following:
- Dissociative Fugue, also known as fugue state, is caused by psychological trauma and is usually temporary, unresolved, and may therefore return.
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- Compensatory mechanisms for this would include increased dissociation of the carbonic acid buffering intermediate into hydrogen ions, and the related excretion of bicarbonate, both of which lower blood pH.
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- The clavicle forms a slight S-shaped curve where it curves from the sternal end laterally and anteriorly for near half its length, then forming a posterior curve to the acromion of the scapula.
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- Hormone binding to the nuclear receptor results in dissociation of the co-repressor and the recruitment of co-activator proteins.