Answer:
B)Metaphase
Explanation:
During metaphase, the nuclear membrane disappears and the chromosomes become aligned half way between the centrioles.
Answer:
D
Explanation:
Particles move from a region of higher concentration to a region of lower concentration until the molecules are evenly contributed
Answer:
1) Hiatal hernia is the disorder of this 26 year old business executive. Hiatal hernia occurs when upper part of stomach pushes through an opening in the diaphragm, and up into the chest. THis opening is called a esophageal hiatus or diaphragmatic hiatus. It is basically a protrusion of the upper part of stomach into the chest through a tear on the chest through a tear or weakness in the diaphragm. The patient presents with :
- Chest pain
- Severe hurtburn
- Abdominal pain
- Frequent burping
- Difficulty in swallowing
- Throat soreness
2) Adequate lower esophageal pressure at the lower esophageal sphincter normally prevent gastric reflux into the esophagus when lying down or bending over.
3) As M3 receptors (parasympathetic) are distributed at the lower esophageal sphincter, cholinergic agonist activates these receptors and increases contraction thus rsulting in a decrease in contraction and preventing Gastroesophageal reflux. Similarly the anticholinergic are avoided because they will relax the LES and thus GERD will increase.
4) H2 antagonists are recommended because they decrease the acid secretion especially at night by blocking H2 receptors.
5) Elevation of the head of the bed recommended in order to encourage the gravitational flows of the contents in stomach toward the pyloric end.
6) Normal Stomach pH = 3-5
Normal esophageal pH = 6-7
pH at Lower esophagus in gastroesophageal patient = 3-5
pH of stomach in patient of GERD = 3-5 (same as that in normal)
Answer:
Genetic information is bundled into packages of <u>DNA</u> known as <u>chromosomes.</u>
Explanation:
DNA is the genetic material. It's how we pass down traits to our offspring. It's the cell's instructions for how to build.
Chromosomes are the, well, packages of DNA. They become visible in meiosis. They basically look like little Xs. Humans normally have 23 of these bundles that determine who we are.
Typically at the surface the highest pressures are with cold air masses. The highest surface pressures were recorded a few years ago in Alaska, it was extremely cold!.
