Females have the openings for the vagina, urethra, and anus.
The size of body openings is primarily controlled by smooth muscles that contract and relax, such as the muscles surrounding blood vessels, airways, and digestive tract. Autonomic nervous system plays a key role in regulating these muscles, with sympathetic activation typically causing constriction and parasympathetic activation causing relaxation to control the diameter of body openings. Hormones and local factors can also influence muscle tone to help regulate the size of body openings as needed.
The inside of the body is lined with a protective layer called the epithelium. This layer covers organs, blood vessels, and other internal structures to provide a barrier and regulate the exchange of substances between different body compartments.
maybe trachea??
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.
Reptiles have 2 body openings. Mouth and an anus.
Females have the openings for the vagina, urethra, and anus.
maize
Sharks have a streamlined body
34759234875-134957
7
2
1
4
The famous animal the "Porifera", has 6 body openings.
12
By them entering through openings in the body.