« previous next »

Author Question: In placental mammals, the yolk sac A) transfers nutrients from the yolk to the e (Read 680 times)

sammy

  • Hero Member
  • *****
  • Posts: 818
on: Oct 2, 2013
In placental mammals, the yolk sac
A) transfers nutrients from the yolk to the embryo.
B) differentiates into the placenta.
C) becomes a fluid-filled sac that surrounds and protects the embryo.
D) produces blood cells that then migrate into the embryo.
E) stores waste products from the embryo until the placenta develops.


clippers!

  • Hero Member
  • *****
  • Posts: 828
Reply #1 on: Oct 6, 2013
For sure it has to be D Mark as solved once you're done!


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

The sites of early embryonic development in mammals. The sites of early embryonic development in mammals.
The Hepatic Portal Blood Supply The liver receives water, minerals, and nutrients from the digestive The Hepatic Portal Blood Supply The liver receives water, minerals, and nutrients from the digestive
A healthy diet is made up of well-balanced nutrients. A healthy diet is made up of well-balanced nutrients.
Synthesis of phosphatidylcholine and phosphatidylethanolamine in mammals Synthesis of phosphatidylcholine and phosphatidylethanolamine in mammals
Anatomy of the Large Intestine By the time chyme reaches the large intestine, most of its nutrients Anatomy of the Large Intestine By the time chyme reaches the large intestine, most of its nutrients
Potential Interactions of Medications, Herbs, Nutrients, and Foods (1 of 2) Potential Interactions of Medications, Herbs, Nutrients, and Foods (1 of 2)
Video: Acid-base imbalances - metabolic acidosis and alkalosis

For a complete list of videos, visit our video library