Specialized tissue on the wall between the atria. Electrical impulses pass from the pacemaker (SA node) through the _______ and the atrioventricular bundle (bundle of His) toward the ventricles.atrium (pl. atria)One of two upper chambers of the heart.capillary<span>Smallest blood vessel. Materials pass to and from the bloodstream through the thin walls. They have walls that are only one endothelial cell in thickness. This delicate, microscopic vessel carries nutrient-rich, oxygenated blood from the arteries and arterioles to the body cells. There, the nutrients are burned in the presence of oxygen (catabolism) to release energy.
At the same time, waste products such as carbon dioxide and water pass out of the cells and into these blood vessels. Waste-filled blood then flows back to the heart in small venues, which combine to form larger vessels called veins.</span>carbon dioxideGas (waste) released by body cells, transported via veins to the heart, and then to the lungs for exhalation.coronary arteriesBlood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle.deoxygenated bloodBlood that is oxygen-poor.diastole<span>Relaxation phase of the heartbeat.</span>
Answer:
Steps recommended to patient for reducing the risk of developing a fungal infection of toenails are regarding to their hygiene, footwear and medications.
Explanation:
- Avoid borrowing someone else's shoes or sharing socks or towels with someone who has toenail fungus.
- An orthotic device can be used to add cushioning and/or control over-pronation, support the longitudinal arch, and reduce stress on the lower leg muscles.
- Wash your feet regularly, and dry them thoroughly when they get wet.
- Keep toenails trimmed, and be sure to disinfect any pedicure tools before using them.
- If there is any toenail fungus, see your foot doctor. The doctor might remove as much of the nail as possible by trimming, filing or dissolving it.
- Medicated nail polish might be prescribed for a localized infection, but a serious infection will likely be treated with a prescription oral antifungal medication
Answer:
D. the answer is triangular
This is a typical case of a dihybrid cross.
From the phenotype of the offspring, we can conclude that the gene for the red color of the flower and the gene for the axial position of the flower are dominant.
Since we know that the ratio of phenotypes in a dihybrid cross of independently inherited alleles is
9(dominant for both traits)
3(dominant for one trait, recessive for the other)
3(dominant for the second trait, recessive for the other)
1(recessive for both traits)
we can expect 3/16 of the f2 generation to be dominamt for one trait and recessive for the other (red, terminal flowers), or to be precise 190 individuals.
The parents both need to be heterozygous, meaning they have to have one dominant and one recessive allele.
