Answer:
Peripheral vascular resistance (systemic vascular resistance, SVR) is the resistance in the circulatory system that is used to create blood pressure, the flow of blood and is also a component of cardiac function. When blood vessels constrict (vasoconstriction) this leads to an increase in SVR.
The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase.
Answer:
Explanation:
Muscle contraction is stimulated by the movement of an action potential moving along a nerve fiber to the muscles. This event follow some series of process before being stimulated.
1. The impulse arrives at the synapse and travels through the transverse tubules.
2. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
4. Tropomyosin molecules bind to exposed active sites, linking actin and myosin.
5. Thin filaments are pulled over the thick filaments.
6. The muscle fiber shortens and contracts.
Answer:
The correct answer is they show weak positive gram staining reaction.
Explanation:
<em>Mycobacterium phlei </em>is a rod-shaped species of the genus Mycobacterium. They are acid-fast bacteria with mycolic acids rich cell wall due to which gram stain cannot penetrate easily and show light purple color while staining.
When gram staining is performed on the <em>M.phlei </em>, they take light purple color which indicates that it is a gram-positive bacteria and is related to Actinobacteria phylum of the gram-positive bacteria.
Thus, <em>M. phlei</em> is a gram-positive bacteria.
If a deep ocean trench is located adjacent to a continent, active volcanoes would likely be found landward from the trench.
The signal Hawkeye and the men agreed on while nearing the Huron encampment were three croaks of a crow.
Hawkeye tells his men to scout the area and in the case that they or he find something, they should use the signal in the form of thee croaks of a crow to warn the others about the danger. However, the only thing he finds in the encampment are a couple of Indians.
