« previous next »

Author Question: The first organ system that shows any sign of activity is the: respiratory system. digestive ... (Read 173 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
on: Jun 22, 2018
The first organ system that shows any sign of activity is the:
 
  respiratory system.
  digestive system.
  nervous system.
  cardiovascular system.

Question 2

The neural tube will become the
 
  reproductive organs.
  intestinal tract.
  brain and spinal cord.
  backbone, legs, and arms.


frogdreck123456

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jun 22, 2018
Answer to Question 1

cardiovascular system.

Answer to Question 2

brain and spinal cord.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter. Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter.
A technician-made adapter used to test exhaust system back pressure. A technician-made adapter used to test exhaust system back pressure.
The respiratory system. The respiratory system.
Relationship between the pancreas and the digestive system. Relationship between the pancreas and the digestive system.
Summary of Cytokine Activity Summary of Cytokine Activity
Events in human fertilization. The light micrograph shows a fertilized human oocyte. Events in human fertilization. The light micrograph shows a fertilized human oocyte.
Video: Pasteur's Experiment

For a complete list of videos, visit our video library