This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The nurse is explaining the process of cell division during the preembryonic period to a group of ... (Read 31 times)

ashley

  • Hero Member
  • *****
  • Posts: 584
on: Jun 28, 2018
The nurse is explaining the process of cell division during the preembryonic period to a group of nursing students. Which describes the morula?
 
  a. Fertilized ovum before mitosis begins
  b. Double layer of cells that becomes the placenta
  c. Flattened, disk-shaped layer of cells within a fluid-filled sphere
  d. Solid ball composed of the first cells formed after fertilization

Question 2

Some of the embryo's intestines remain within the umbilical cord during the embryonic period because the:
 
  a. intestines need this time to grow until week 15.
  b. nutrient content of the blood is higher in this location.
  c. abdomen is too small to contain all the organs while they are developing.
  d. umbilical cord is much larger at this time than it will be at the end of pregnancy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Meganchabluk

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jun 28, 2018
Answer to Question 1

ANS: D
The morula is so named because it resembles a mulberry. It is a solid ball of 12 to 16 cells that develops after fertilization. The fertilized ovum is called the zygote. The placenta is formed from two layers of cellsthe trophoblast, which is the other portion of the fertilized ovum, and the decidua, which is the portion of the uterus where implantation occurs. The flattened, disk-shaped layer of cells is the embryonic disk; it will develop into the body.

Answer to Question 2

ANS: C
The abdominal contents grow more rapidly than the abdominal cavity, so part of their development takes place in the umbilical cord. By 10 weeks, the abdomen is large enough to contain them. The intestines remain within the umbilical cord only until about week 10. Blood supply is adequate in all areas; intestines stay in the umbilical cord for about 10 weeks because they are growing faster than the abdomen. Intestines begin their development within the umbilical cord, but only because the liver and kidneys occupy most of the abdominal cavity, not because of the size of the umbilical cord.


ashley

  • Hero Member
  • *****
  • Posts: 584
Reply #2 on: Jun 28, 2018
Thank you


Meganchabluk

  • Sr. Member
  • ****
  • Posts: 301
Reply #3 on: Jun 28, 2018
No problemo


« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs. Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs.
Relationship of the spindle-assembly checkpoint (SAC) with the cell-cycle machinery Relationship of the spindle-assembly checkpoint (SAC) with the cell-cycle machinery
A cell. A cell.
Basal cell carcinoma Basal cell carcinoma
Embryonic Period - 7th week Embryonic Period - 7th week
The stages comprising an arbitrary cell cycle The stages comprising an arbitrary cell cycle
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

For a complete list of videos, visit our video library