Table of Contents
- 1 What is corpora quadrigemina and its function in the human body?
- 2 What are corpora Bigemina?
- 3 Where are the autonomic reflex centers located in the brain for heart rate and breathing?
- 4 Is corpora quadrigemina a mammalian character?
- 5 What is the midbrain located between?
- 6 Which part of the human brain is located between thalamus and pons?
What is corpora quadrigemina and its function in the human body?
The corpora quadrigemina are reflex centers involving vision and hearing. It consists of groups of nerve cells-grey matter scattered in white matter. It basically connects the forebrain and the hind brain. It has four corpora quadrigemina which are the reflex centres of eye movement and auditory responses.
What portion of the brain is the corpora quadrigemina?
midbrain
Corpora quadrigemina is the Latin terminology for the quadruple bodies, also known as the colliculi. These round eminences are located on the posterior surface of the midbrain, just below the thalamus. There are two superior and two inferior colliculi,with one of each sitting on either side of the midline.
What are corpora Bigemina?
bi·gem·i·nal bod·ies. a bilateral single swelling of the roofplate of the embryonic midbrain that later in development becomes subdivided into a superior and an inferior colliculus. See: quadrigeminal bodies. Synonym(s): corpora bigemina.
What is the importance of corpora quadrigemina of midbrain?
The corpora quadrigemina are four rounded elevations on the dorsal surface of the midbrain. The two superior colliculi are involved in visual reflexes and the two inferior colliculi are relay centres for auditory reflexes that operate when it is necessary to move the head to hear sounds more distinctly.
Where are the autonomic reflex centers located in the brain for heart rate and breathing?
The medulla oblongata (myelencephalon) is the lower half of the brainstem continuous with the spinal cord. Its upper part is continuous with the pons. The medulla contains the cardiac, respiratory, vomiting, and vasomotor centers regulating heart rate, breathing, and blood pressure.
Where is the Sylvian aqueduct located?
The cerebral aqueduct (of Sylvius) is the structure within the brainstem that connects the third ventricle to the fourth. It is located within the midbrain, surrounded by periaqueductal grey matter (PAG) with the tectum of midbrain located posteriorly and the tegmentum anteriorly.
Is corpora quadrigemina a mammalian character?
The quadrigemina means quadruplet bodies. So, the small, solid and four lobes or colliculus called corpora quadrigemina are found in mammals. Thus, the correct answer is option A. i.e., Mammals.
Which option is correct regarding corpora quadrigemina?
Hence, the correct option is (B). Corpora quadrigemina- four rounded swellings present on the ventral portion of the midbrain.
What is the midbrain located between?
The midbrain is located between the thalamus or hypothalamus of forebrain and pons of the hindbrain.
What structure of the corpora quadrigemina contains the auditory reflex center?
The part of the brain stem that contains corpora quadrigemina, visual and auditory reflex center, is the midbrain.
Which part of the human brain is located between thalamus and pons?
The midbrain is located between the thalamus or hypothalamus of forebrain and pons of the hindbrain.