Which Passageway Connects The Third And Fourth Ventricles?

Does the brain have cavities?

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)..

What side of the brain controls language?

leftIn general, the left hemisphere or side of the brain is responsible for language and speech. Because of this, it has been called the “dominant” hemisphere.

Which ventricles are connected by the cerebral aqueduct?

The cerebral aqueduct is a narrow channel, 1 to 3 mm in diameter, that connects the third ventricle (the cavity of the diencephalon) with the fourth ventricle (the rhombencephalic cavity).

What is the role of the ventricles?

Function. During systole, the ventricles contract, pumping blood through the body. During diastole, the ventricles relax and fill with blood again. The left ventricle receives oxygenated blood from the left atrium via the mitral valve and pumps it through the aorta via the aortic valve, into the systemic circulation.

What three main structures make up the brainstem?

The brainstem is divided into three sections in humans: the midbrain (mesencephalon), the pons (metencephalon), and the medulla oblongata (myelencephalon).

What is the passageway found in the spinal cord that is continuous with the ventricles?

Calculate the PriceTwo terms for the massive motor tracts serving voluntary movement are ________.pyramidal and corticospinalWhich passageway connects the third and fourth ventricles?cerebral aqueductIdentify the passageway found in the spinal cord that is continuous with the ventricles.central canal34 more rows

How are ventricles connected?

CSF flows from the lateral ventricle to the third ventricle through the interventricular foramen (also called the foramen of Monro). The third ventricle and fourth ventricle are connected to each other by the cerebral aqueduct (also called the Aqueduct of Sylvius).

Which area of the brain stem is in contact with the spinal cord?

medulla oblongataWhich area of the brain stem is in contact with the spinal cord? The medulla oblongata is the lowest region of the brain stem. It is continuous with the spinal cord at the foramen magnum of the skull.

What causes small ventricles in the brain?

This finding is presumably due to non-specific and diffuse swelling of brain parenchyma, and is illustrated in cases of trauma, neoplasm, encephalitis, pseudotumor cerebri, metabolic disorder, and probable dilantin effect. It is likely that other causes will be encountered in the future.

What defines the border between the lowest part of the brain stem and the spinal cord?

The base of the medulla is defined by the commissural fibers, crossing over from the ipsilateral side in the spinal cord to the contralateral side in the brain stem; below this is the spinal cord.

Are the ventricles all interconnected?

The ventricles are all an important part of the “ventricular system.” The ventricles are interconnected with each other, and also with the central canal of the spinal cord and with the subarachnoid space (space between two of the linings that separate the brain from the skull).

Is the brain a solid organ that lacks cavities?

The brain is a solid organ that lacks cavities. Deep grooves within the cerebral hemispheres are known as gyri.

What is the term given to drugs that kill brain cells?

DEPRESSANT. What term is given to drugs that kill brain cells? NEUROTOXIN.

What is the purpose of ventricles in the brain?

The ventricular system is a set of communicating cavities within the brain. These structures are responsible for the production, transport and removal of cerebrospinal fluid, which bathes the central nervous system.

What does the brain stem join?

The brainstem is composed of the multi-colored structures above, which include the midbrain, pons, and medulla. The spinal cord enters the skull through an opening known as the foramen magnum. At about this point, the cord merges with the medulla oblongata, which is the lowest part of the brainstem.