This topic contains a solution. Click here to go to the answer

Author Question: The ion that enters myofibrils and stimulates actin and myosin to shorten the cell (contract) is: ... (Read 64 times)

notis

  • Hero Member
  • *****
  • Posts: 596
The ion that enters myofibrils and stimulates actin and myosin to shorten the cell (contract) is:
 
  a. iron.
  b. calcium.
  c. sodium.
  d. potassium.

Question 2

Amenorrhea in female athletes is associated with:
 
  a. poor absorption of iron.
  b. loss of lean body mass.
  c. low bone density.
  d. ketoacidosis.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dyrone

  • Sr. Member
  • ****
  • Posts: 322
Answer to Question 1

B

Answer to Question 2

C



notis

  • Hero Member
  • *****
  • Posts: 596
Both answers were spot on, thank you once again



dyrone

  • Sr. Member
  • ****
  • Posts: 322

 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

For a complete list of videos, visit our video library