The cranial cavity, also known as intracranial space, is the space within the skull. The space inside the skull is formed by eight cranial bones known as the neurocranium. The neurocranium is the upper back part that forms the protective case around the brain.

The sinuses are hollow spaces in the skull and the face bones around your nose. The frontal sinuses are located above the eyes, near your forehead. The ethmoid sinuses are located on each side of the bridge of your nose, near your eyes. There are three small pairs of the ethmoid sinuses.

Terms in this set (11)

• frontal bone.
• frontal sinus.
• ethmoidal air cells.
• maxillary sinus.
• nasal cavity.
• oral cavity.
• zygomatic bone.
• ethmoid bone.

The nasal cavity is divided in two by the vertical nasal septum. On the side of each nasal cavity are three horizontal outgrowths called nasal conchae (singular “concha”) or turbinates.

Anatomical terminology for body cavities: Humans have multiple body cavities, including the cranial cavity, the vertebral cavity, the thoracic cavity (containing the pericardial cavity and the pleural cavity), the abdominal cavity, and the pelvic cavity.

Terms in this set (7)

• dorsal cavity. body cavity that houses the skull, brain, and spinal cavity.
• ventral cavity. this body cavity is divided into three parts; the thorax, abdomen, and pelvis.
• thoracic cavity. body cavity that contains the heart and lungs.
• abdominal cavity.
• pelvic cavity.
• abdominopelvic cavity.
• body cavity.

Terms in this set (12)

• dorsal body cavity. located near the posterior surface of the body.
• cranial cavity. contains the brain.
• vertebral cavity. made of vertebral column and contains spinal cord.
• meninges.
• ventral body cavity.
• thoratic cavity.
• abdominopelvic cavity.
• pericardial cavity.

Terms in this set (8)

• Body Cavaties. Essential function of body cavities:
• Serous Membranes. Line of body cavities and cover organs.
• Thoracic Cavity. Right and left pleural cavities (contain right and left lungs)
• Ventral body cavity (coelom)
• Abdominopelvic Cavity.
• Abdominopelvic cavity.
• Retroperitoneal space.
• Pelvic cavity.

The cavities, or spaces, of the body contain the internal organs, or viscera. The two main cavities are called the ventral and dorsal cavities. The ventral is the larger cavity and is subdivided into two parts (thoracic and abdominopelvic cavities) by the diaphragm, a dome-shaped respiratory muscle.

The abdominopelvic cavity is a body cavity that consists of the abdominal cavity and the pelvic cavity. It contains the stomach, liver, pancreas, spleen, gallbladder, kidneys, and most of the small and large intestines.

four body cavities

The five body cavities include the following: The abdominal cavity contains the stomach, intestines, liver, spleen, gallbladder, pancreas, ureters, and kidneys….Medical Terminology for Cavities of the Body.

Terms in this set (14)

• Dorsal Cavity. Cavity located in the back of the body.
• Ventral Cavity. Contains the structures within the chest and abdomen.
• Thoracic Cavity. Chest cavity.
• Abdominopelvic Cavity. Contains: abdominal & pelvic cavities.
• Cranial Cavity.
• Vertebral Cavity.
• Theoracic cavity.
• Pelvic Cavity.

The thoracic cavity fills the chest and is subdivided into two pleural cavities and the pericardial cavity. The pleural cavities hold the lungs, and the pericardial cavity holds the heart. The abdominopelvic cavity fills the lower half of the trunk and is subdivided into the abdominal cavity and the pelvic cavity.

lungs

The human heart is about the size of a clenched fist and is located in the thoracic cavity between the sternum and the vertebrae.

Subdivisions of the Posterior (Dorsal) and Anterior (Ventral) Cavities. The posterior (dorsal) and anterior (ventral) cavities are each subdivided into smaller cavities. In the posterior (dorsal) cavity, the cranial cavity houses the brain, and the spinal cavity (or vertebral cavity) encloses the spinal cord.

Serous membranes line closed ventral body cavities.

The heart is in the mediastinum, enclosed by the pericardium. The lungs occupy the left-right regions and the pleura lines the corresponding half of the thorax and forms the lateral mediastinal boundary.

The heart has four chambers: two atria and two ventricles.

Anatomy of the heart

• Left atrium and auricle. Left atrium. Left auricle.
• Right atrium and auricle. Right atrium. Right auricle.
• Interventricular septum and septal papillary muscles. Interventricular septum.
• Right ventricle and papillary muscles. Right ventricle.
• Left ventricle and papillary muscles. Left ventricle.

The left ventricle is the largest and strongest chamber in your heart. The left ventricle’s chamber walls are only about a half-inch thick, but they have enough force to push blood through the aortic valve and into your body.

Heart Chambers, Valves, Vessels, Wall and Conduction System The heart is made up of four chambers. The upper two chambers are called atria (singular: atrium) and the lower two are known as ventricles (singular: ventricle). Muscular walls, called septa or septum, divide the heart into two sides.

The heart is made up of four chambers: two upper chambers known as the left atrium and right atrium and two lower chambers called the left and right ventricles. It is also made up of four valves: the tricuspid, pulmonary, mitral and aortic valves.

The base of the heart is located along the body’s midline with the apex pointing toward the left side. Because the heart points to the left, about 2/3 of the heart’s mass is found on the left side of the body and the other 1/3 is on the right.

Terms in this set (15)

• Superior Vena Cava. #1 Carries deoxygenated blood from the body.
• Aorta. #2 Artery that carries blood directly from the heart to the rest of the body.
• Pulmonary Trunk.
• Right Atrium.
• Pulmonary Valve.
• Tricuspid Valve.
• Right Ventricle.
• Inferior Vena Cava.

Additionally, the heart is largely made up of a type of muscle tissue called cardiac muscle. This muscle contracts when your heart beats, allowing blood to pump through your body.

Examples: Brisk walking, running, swimming, cycling, playing tennis and jumping rope. Heart-pumping aerobic exercise is the kind that doctors have in mind when they recommend at least 150 minutes per week of moderate activity.

the heart