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Muscle Joint
Pisces or fish have true internal body cavity.
The cerebellum is in the cranial cavity. The dorsal body cavity is also known as the cavity that encloses the brain and the spinal cord but the brain is protected from trauma by the cranial cavity.
The abdominal cavity and the chest cavity are the two largest body cavities in humans.
peritoneal cavity
Muscle Joint
mucosa
Opens and closes your lower jaw
i believe it is the diaphragm.
Your question is not clear, but the diaphragm is the muscle that divided the abdomen from the thorax (the chest cavity from the abdominal cavity). Ventral is term that is used mostly in veterinary medicine and it refers to the side of the body that has the belly button.
sea anemone possess hydrostatic skeleton . Its cavity is filled with seawater to extend its body and tentacles . The sea anemone closes its mouth and contracts its muscle fibres that are arranged in circles around its body . The contraction of these circular muscles put pressure on liquid of the body cavity . This pressure forces the body to maintain upright position
Answer: skeletal musculature( connective tissue)
Diaphragm
Diaphragm
Major: Dorsal Body Cavity & Ventral Body Cavity Subdivision of Dorsal: cranial cavity & vertebral cavity Subdivision of Ventral: Thoracic Cavity, Abdominopelvic Cavity, Abdominal Cavity, Pelvic Cavity
The abdominal pelvic cavity has a muscular wall. There are no bone to protect the intestines so a thick wall helps. The muscles also allow for flexing at the waist.
The coelom of an earthworm is its body cavity. There are three categories for grouping animals according to their coeloms: coelomate (animals that have a true coelom lined by muscle tissue on both sides), pseudocoelomate (animals that have a coelom line by muscle tissue only on one side), and acoelomates (animals that do not have a body cavity lined by muscle tissue on either side). Earthworms are coelomate animals.