Cochlea i think
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The main difference between the hemocoel and coelom is their structure and function within the body cavity of certain organisms. The hemocoel is a cavity filled with blood that acts as the main body cavity in some invertebrates, while the coelom is a fluid-filled cavity lined with mesoderm that houses internal organs in many higher organisms. The hemocoel primarily functions in circulation and nutrient transport, while the coelom provides support and protection for internal organs.
A sinus is an air-filled cavity within a bone that is lined with mucous membrane. Sinuses help to humidify and filter air as it passes through the nasal cavity.
A coelom is a fluid-filled body cavity found in many animals, including humans. It serves to cushion and protect internal organs, as well as providing a space for them to move independently of the body wall. This cavity is lined by a membrane called the peritoneum.
The cell-lined bag of fluid between the cartilage ends of bones is called the synovial membrane. It secretes synovial fluid, which lubricates the joint and provides nutrients to the cartilage. This helps reduce friction and allows for smooth movement of the joint.
A tendon sheath is a fluid-filled cavity that surrounds a tendon to reduce friction and allow smooth movement. It is lined with synovial cells that secrete a lubricating fluid called synovial fluid.
No, coelomates do not have a body cavity. Coelomates have a fluid-filled cavity called a coelom that is lined with mesoderm. This cavity allows for the internal organs to be suspended and protected within the body.
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The cochlea is the structure that actually contains the hearing receptors in the inner ear. It is a spiral-shaped organ filled with fluid and lined with tiny hair cells that detect sound vibrations and help transmit auditory information to the brain.
The abdominal cavity contains major body organs such as the stomach, liver, intestines, and kidneys. This cavity is lined with a membrane called the peritoneum and is filled with a fluid called peritoneal fluid to help protect and cushion the organs.
A paraovarian cyst is a epithelium-lined fluid-filled cysts. This type of cyst is located adjacent to the fallopian tube and ovary.
The vibration-sensing organ of the inner ear is the cochlea. It is a spiral-shaped structure filled with fluid and lined with tiny hair cells that detect sound vibrations and convert them into electrical signals that are sent to the brain for processing.
alveolus
Echinoderms also have a spacious coelom (an open, fluid-filled body cavity lined with tissue), large gonads, and (usually) a complete gut.
AnswerRoundworms are among several phyla of animals known as pseudocoelomates. They are so named because they have a pseudocoelom, a hollow, fluid-filled cavity that is lined by mesoderm on the outside and endoderm on the inside.
The coelom is a fluid-filled body cavity between the intestines and the body wall of some higher metazoans. It is lined with a mesodermal epithelium. The coelom is formed within the mesoderm of the embryo.
A synovial fluid sac which is actually called a synovial bursa is a fluid-filled sac lined with synovial membrane with an inner layer of slimy fluid. This provides cushion between bones and tendons and/or muscles around joints. They also reduce friction between the bones.