I believe it is the ventricles. It collects and expels blood.
It is like an automatic door that closes and shuts itself.
Cell membrane
Cell membrane
The cervix acts as a door between the vagina and the uterus. It opens and thins during ovulation to allow sperm to enter the uterus and potentially fertilize an egg.
We have a 2000 Montana and yes it does have automatic door locks.
These one-way 'doorways' are called valves. They exist in places such as the heart and the oesophagus/stomach opening.
There are so many answers to that question. The uvula acts kind of like a door as well as any of the sphincters. The valves of the heart act like little doors also.
An automatic door, also known as an auto door, is a door that opens automatically, usually on sensing the approach of a person. It could be sliding, swing or revolving door
An automatic door would be great in assisting in everyday living situations such as bringing in groceries or even to accommodate handicapped people. A disadvantage to having an automatic door would be lack of control on how far a door is to be opened or remain open, that is if the door you get doesn't already adjust to non automatic as well.
all you have to do is unplug the motor and the motor is locted under neath the automatic door. and then you can open the door.
In reference to pools? ??????
Automatic door locks engage on the 2003 Ford Explorer for safety.
Yes, you can manually open a garage door if the automatic mechanism fails by disengaging the opener and lifting the door by hand.