GROSS ANATOMY

Detailed explanation-1: -In the dorsal cavity, the cranial cavity houses the brain, and the spinal cavity encloses the spinal cord.

Detailed explanation-2: -The cranial cavity, also known as intracranial space, is the space within the skull that accommodates the brain. The skull minus the mandible is called the cranium. The cavity is formed by eight cranial bones known as the neurocranium that in humans includes the skull cap and forms the protective case around the brain.

Detailed explanation-3: -The cranial cavity fills most of the upper part of the skull and contains the brain. The spinal cavity is a very long, narrow cavity inside the vertebral column. It runs the length of the trunk and contains the spinal cord.

Detailed explanation-4: -The ventricles of the brain are a communicating network of cavities filled with cerebrospinal fluid (CSF) and located within the brain parenchyma. The ventricular system is composed of 2 lateral ventricles, the third ventricle, the cerebral aqueduct, and the fourth ventricle (see the images below).

Detailed explanation-5: -On the anterior side of the body, the ventral cavity is made up of the thoracic cavity, abdominal cavity, and pelvic cavity. The thoracic cavity contains the heart, lungs, breast tissue, thymus gland, and blood vessels.