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Where is an ovum normally fertilized by a sperm cell?
fertilisation takes place in ampulla of uterine tube
What is a ampulia of oviduct?
The ampulla is a region of the oviduct (or fallopian tube) where fertilization of the ovum occurs in over 90% of all fertilization cases. Because of this, the ampulla is also the site of most ectopic pregnancies. Please see the related links for labelled images.
Successful fertilization occurs in what tube?
isthmus boundary between the ampulla and isthmus
The water vascular system of an echinoderm regulates?
Locomotion. In the sea star, water enters the system through a sieve plate. Eventually it is pumped into many tube feet, expanding them. When the foot touches a surface, the center withdraws, producing suction that causes the foot to adhere to the surface. By alternating the expansion and contraction of it's many tube feet, a sea star moves slowly along.
What is the structure that receive the ovulated oocyte providing a site for fertilization is called?
The structure that receives the ovulated oocyte and provides a site for fertilization is called the fallopian tube, also known as the oviduct. Fertilization typically occurs in the ampulla region of the fallopian tube.
How does the water vascular system work?
Water enters the system through the sieve plate, and then flows through the ring canal around the mouth. From the ring canal the water flows through the radial canal in the feet. The radial canal is connected to the tube feet which has hundreds of tiny suckers. Oxygen enters and waste leaves the tube feet. Each tube foot is connected to an ampulla. The ampulla regulates fluid pressure so that each tube foot may extend or retract, hang on or let go.
Each tube feet of a sea star is connected to a water-filled sac called an?
Ampulla
What are the bulb-like sacs in echinoderms that push water through canals as a part of their vascular system?
The structure in an echinoderm that is a bulb like sac and pushes what is called the ampulla. It is connected to the radial canal of the water-vascular system. Each ampulla controls tube feet. The tube feet can extend when water pressure is increased by the ampulla being squeezed. :)
Where fertilization happens?
ampulla of the uterine tube.
What place does fertilisation take place?
ampulla of the fallopian tube
Function of cilia in uterine tube?
to move material further down the tube. ie from the infundibulum to the ampulla
Why does fertilization occur in the fallopian tube?
The Ampulla -Its the widest, longest portion of tube, it is usually the site of fertilization..(just read over this in my college anatomy class)..
Function of vascular water system in starfish?
Starfish move using a water vascular system. Water comes into the system via the madreporite. It is then circulated from the stone canal to the ring canal and into the radial canals. The radial canals carry water to the ampulla (reservoir) portion of tube feet. Each tube foot consists of an internal ampulla and an external podium, or "foot". When the ampulla is squeezed, it forces water into the podium, which expands to contact the substrate. In some circumstances the tube feet seem to work as levers, but when moving on vertical surfaces, they form a traction system. Although the podium resembles a suction cup in appearance, the gripping action is a function of adhesive chemicals rather than suction. Other chemicals and podial contraction allow for release off the substrate. The tube feet latch on to surfaces and move in a wave, with one body section attaching to the surfaces as another releases.
Where is an ovum normally fertilized by a sperm cell?
fertilisation takes place in ampulla of uterine tube
What is the infindibulum?
The infundibulum is the first branch of the uterine tube (followed by the ampulla, then the isthmus) leading to the lumen of the uterus.
What is the function of the ampulla on a star fish?
The ampulla on a starfish is part of the water vascular system, and stores water and sends it to tiny tube feet on the ventral side of a starfish's arms. This process helps starfish move, as the water vascular system is the part of the starfish responsible for locomotion.
What uinites to an ovule?
A sperm cell (also called spermatozoa) unites with ovule usually in ampulla of fallopian tube
