Answer: Type of membrane that is dry: C) cutaneous membrane
Step-by-step explanation:
The cutaneous membrane, also known as the skin, is the type of membrane that is dry. It is the outermost protective covering of the body and is composed of two main layers: the epidermis and the dermis.
Here are some key points about the cutaneous membrane:
1. Dry nature: Unlike other types of membranes, such as serous, mucous, and synovial membranes, the cutaneous membrane is dry. It is exposed to the external environment and is designed to protect the body from water loss, microbes, and physical damage.
2. Epidermis: The epidermis is the outermost layer of the skin. It is composed of stratified squamous epithelial tissue and lacks blood vessels. The epidermis contains specialized cells called keratinocytes that produce a tough protein called keratin, which helps in waterproofing the skin.
3. Dermis: The dermis is the layer beneath the epidermis. It is composed of connective tissue and contains blood vessels, nerves, hair follicles, sweat glands, and other structures. The dermis provides strength, elasticity, and support to the skin.
4. Functions: The cutaneous membrane has several important functions. It protects the underlying tissues and organs from physical, chemical, and microbial damage. It helps regulate body temperature through sweat production and blood vessel dilation or constriction. It also contains sensory receptors that allow us to perceive touch, pressure, temperature, and pain.
In summary, the cutaneous membrane is the type of membrane that is dry. It forms the outermost layer of the body, known as the skin, and serves as a protective barrier against the external environment. Its dry nature and unique structure contribute to its functions in maintaining body integrity and regulating various physiological processes.