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

Author Question: Blepharoptosis is drooping of the eyelids. Indicate whether the statement is true or ... (Read 75 times)

Metfan725

  • Hero Member
  • *****
  • Posts: 552
on: Jun 27, 2018
Blepharoptosis is drooping of the eyelids.
 
  Indicate whether the statement is true or false

Question 2

Explain how a muscle fiber contracts.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

stillxalice

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jun 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

Each muscle fiber is connected to a single nerve cell at the neuromuscular junction. When the electrical impulse reaches the end of the nerve cell, the nerve cell releases the neurotransmitter acetylcholine. Acetycholine is a chemical messenger that moves across the neuromuscular junction and acts as a key to unlock receptors on the muscle fiber. This changes the permeability of the cell membrane and allows calcium ions to flow into the muscle fiber. Calcium ions cause the thin filaments to slide between the thick filaments, shortening the muscle and producing a muscle contraction.


Metfan725

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jun 27, 2018
Thank you :)


stillxalice

  • Sr. Member
  • ****
  • Posts: 339
Reply #3 on: Jun 27, 2018
Happy to help you


« previous next »
 

Did you know?

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

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Apparent and True Orbits of Alpha Centauri. Apparent and True Orbits of Alpha Centauri.
true story true story
True Forget-Me-Not True Forget-Me-Not
True Friendship True Friendship
Which of the following statements is true of linkage? Which of the following statements is true of linkage?
Example of an Explanation of Benefits statement. Example of an Explanation of Benefits statement.
Video: Physiology of Asthma

For a complete list of videos, visit our video library