Answer:
B. hydrostatic and osmotic pressure
Explanation:
The mass movement of fluids into and out of capillary beds requires a transport mechanism far more efficient than mere diffusion. This movement often referred to as bulk flow, involves two pressure-driven mechanisms: Volumes of fluid move from an area of higher pressure in a capillary bed to an area of lower pressure in the tissues via filtration. In contrast, the movement of fluid from an area of higher pressure in the tissues into an area of lower pressure in the capillaries is reabsorption. Two types of pressure interact to drive each of these movements: HYDROSTATIC PRESSURE AND OSMOTIC PRESSURE.
The primary force driving fluid transport between the capillaries and tissues is HYDROSTATIC PRESSURE, which can be defined as the pressure of any fluid enclosed in a space. Blood hydrostatic pressure is the force exerted by the blood confined within blood vessels or heart chambers. Even more specifically, the pressure exerted by blood against the wall of a capillary is called capillary hydrostatic pressure (CHP) and is the same as capillary blood pressure. CHP is the force that drives fluid out of capillaries and into the tissues.
The net pressure that drives reabsorption—the movement of fluid from the interstitial fluid back into the capillaries—is called OSMOTIC PRESSURE (sometimes referred to as oncotic pressure). Whereas hydrostatic pressure forces fluid out of the capillary, osmotic pressure draws fluid back in. Osmotic pressure is determined by osmotic concentration gradients, that is, the difference in the solute-to-water concentrations in the blood and tissue fluid. A region higher in solute concentration (and lower in water concentration) draws water across a semipermeable membrane from a region higher in water concentration (and lower in solute concentration).
Answer:
Explanation:
If you sleep on your back, a pillow that is too thick can strain the curvature of your spine and your neck muscles. If your pillow is too thin, side-sleeping can strain the muscles on the side of your neck
Answer:
<h2>Genotypes of parents are Rr and rr.</h2><h2 />
Explanation:
A homozygous fox would have either two dominant alleles (RR) or two recessive alleles (rr).
A heterozygous fox would have a mix of both one dominant allele and one recessive allele (Rr).
However, a heterozygous fox can only be red, as the (Rr) combination will make it so that the dominant red coat trait will rule over the recessive allele.
(a). as given that f 1 generation are 4 red and 3 white , so RED coat can not be homozygous dominant , So red coat will be Rr (heterozygous dominant).
(b). silver coat is recessive homozygous , rr
(c). genotypes of offspring Rr, Rr, rr, rr.
(d) yes
(e) yes
Answer:
Allele frequencies
Explanation:
The only component that is transmitted from generation to generation is the genetic material (genes), the fact that an individual leaves more descendants implies that their genetic variants (alleles) will be more represented in the next generation. The frequencies of the different alleles will change from one generation to another, and this change will be irreversible when the set of genes in the population is considered, since it is highly unlikely that a previous configuration will be returned in all gene variants. Hence, from a population point of view, evolution is ultimately a cumulative and irreversible change in the proportions of different gene variants in populations. The agents that change the allele (or gene) frequencies of populations, that is, factors of evolution, are mutation, genetic drift, migration, and natural selection. Mutation is a factor that increases genetic diversity. Natural selection is the process by which the gene frequencies involved with certain traits vary from generation to generation, since some variants of the trait have a greater capacity than others to survive and produce offspring. The mutation rate of a gene or DNA sequence is the frequency at which new mutations occur in that gene or sequence in each generation. In each generation there is a gene raffle during the transmission of gametes from parents to children which is known as genetic drift. In the absence of gene flow, gene drift will also lead to local differences in allele frequencies.
Answer:
look it up
Explanation:
it should give you the answer