The ventricle leads into a single anterior median aorta.
Ventricle of the heart.
It consists of a median ventricle with muscular walls and a cavity traversed by muscular strands.
A, Pericardium opened dorsally a, Ventricle of the heart.
The openings of the auricles into the ventricle vary in different forms. In many of the lower forms (Lepidopleuridae, Mopalidae, Ischnochitonidae) the opening on each side is single and anterior.
these differences of gill-struc v, Ventricle of the heart.
In Anodonta the blood is driven by the ventricle through the arteries into vessel-like spaces.
The ventricle and auricles of Anodonta lie in a pericardium which is clothed with a pavement endothelium (d, fig.
On either side of the ventricle, in the primitive condition, is a thinwalled auricle, opening into the ventricle by a valved opening.
Rectum traversing the ventricle of the heart.
The heart is enclosed in the pericardium, and consists of a median elongated ventricle and a pair of lateral auricles, so that the structure somewhat resembles that in the Lamellibranchiata.
and of two auricles which open into the ventricle by orifices protected by valves.
In the primitive form a single anterior aorta is given off from the ventricle, the two together representing the dorsal blood-vessel of Chaetopods.
The right ventricle occupies the ventral portion of the heart.
The rectum traverses the pericardium, and has the ventricle of the heart wrapped, as it were, around it.
The communication with the atrium is guarded by a valvula cardiaca dextra, which only in function represents the mammalian tricuspid; it consists of an oblique reduplication of the muscular fibres together with the endocardiac lining of the right ventricle, while the opposite wall is convex and forms neither a velum nor papillary muscles, nor chordae tendineae.
Heart with two auricles; ventricle traversed by the rectum, except in the Helicinidae.
There is a heart in the pericardium consisting of a median ventricle attached, except in Neomenia, to the dorsal wall of the pericardium, and in Neomenia a pair of auricular ducts returning blood from the gills to the ventricle.
The cardiac contractions become irregular, the ventricle assumes curious shapes - "hour-glass," &c. - becomes very pale and bloodless, and finally the heart stops in a state of spasm, which shortly afterwards becomes rigor-mortis.
The heart c lying in the pericardium is seen in close proximity to the renal organ, and consists of a single auricle receiving blood from the gill, and of a single ventricle which pumps it through the body by an anterior and posterior aorta.
In more specialized forms a posterior aorta passes backwards from the ventricle, as in Gastropods and the majority of Lamellibranchs.
The heart in Patella consists of a single auricle (not two as in Haliotis and Fissurella) and a ventricle; the former receives the blood from the branchial vein, the latter distributes it through a large aorta which soon leads into irregular blood-lacunae.
A, View of the heart of a dog infested with Filaria immitis Leidy; the right ventricle and base of the pulmonary artery have been opened: a, aorta; b, pulmonary artery; c, vena cava; d, right ventricle; e, appendix of left auricle; f, appendix of right auricle.
h, The heart (auricle and ventricle).
The heart lying within the adjacent pericardium has the usual form, a single auricle and ventricle.
Aperture by which the left auricle joins the ventricle.
indicate the course of fluid ab, Posterior, cut remnants of the from the pericardium outintestine and ventricle.
b, buccal mass; m, retractor muscles of the buccal mass; ov, ovary; od, oviduct; i, coils of intestines; ao, aorta; c', left auricle; c, ventricle.
In the true Chitonidae there are generally two apertures on each side, and in two species three or four, another instance of the tendency to metameric repetition in the group. The auricles are connected with one another posteriorly behind the ventricle.
There is great variety in the distribution V, Ventricle.
dilatation of the contralateral ventricle like this indicates that there is very significant pressure on the brain.
There has been a large fairly recent acute myocardial infarct in the left ventricle, which is accompanied by endocardial thrombosis and pericarditis.
It shows the typical triangular shape flaring out from the lateral tip of the lateral ventricle.
third ventriclepeptides reduce food intake when injected into the third cerebral ventricle, and probably have several other functions within the central nervous system.
The second loop in the system involves the blood now being pumped from the left ventricle around the body.
Note also the dilated lateral ventricle on the opposite side.
The aorta in turn, arises from the left ventricle which is the main pumping chamber of the heart.
The cells in the floor of the fourth ventricle respond to the pH of the CSF.
Pulmonary valve A valve at the junction of the right ventricle to the pulmonary artery.
The pineal gland is a tiny structure located at the back of the roof of the third ventricle of the brain.
ventricle pumps blood through the arteries to the body.
ventricle right ventricle which then contracts.
Double outlet right ventricle A cardiac defect in which both great major vessels emerge from the right ventricle.
ventricle of the brain.
ventricle of the heart to the body.
Their transverse dorsal connexion is the posterior commissure; otherwise the whole roof portion of the midbrain is reduced to a thin membrane, continuous with that which covers the Sylvian aqueduct, and this ventricle sends a lateral cavity into each optic lobe, as is the case in reptiles.
The right anterior corner of the right ventricle passes into the short stem, guarded by three semi-lunar valves, which divides into the two pulmonary arteries.
The heart of Anodonta consists of a median ventricle embracing the rectum (fig.
The heart and vascular system are similar to those of the Neomeniomorpha, the only important differences being that the ventricle is nearly free in the pericardial cavity, and that the latter is traversed by the retractor muscles of the gills.
CART-derived peptides reduce food intake when injected into the third cerebral ventricle, and probably have several other functions within the central nervous system.
The left ventricle pumps blood through the arteries to the body.
Blood is forced out of the left side of the heart The right ventricle contracts.
This forces blood into the left atrium right atrium left ventricle right ventricle which then contracts.
The aorta is the large artery that takes blood from the left ventricle of the heart to the body.
Aortic valve-The valve between the heart's left ventricle and ascending aorta that prevents regurgitation of blood back into the left ventricle.
The pulmonary vein carries the blood from the right ventricle of the heart into the lungs.
Ventricle septal defect-A hole in the wall (septum) between the lower chambers of the heart.
In serious cases, it causes the left ventricle of the heart to enlarge and may eventually lead to heart failure.
It involves a constricture of the aorta, the main artery that delivers blood from the left ventricle of the heart to the rest of the body.
In asymptomatic children with COA, the descending aorta receives left ventricle blood through the ascending aorta; these children have fewer, if any, associated cardiac abnormalities.
Blood normally leaves the heart by way of the left ventricle and is distributed to the body through the arteries.
Among the consequences of COA is an enlargement of the left ventricle (ventricular hypertrophy) in response to increased back-pressure of the blood and the demand for more blood by the lower body.
Infants frequently have an abnormal electrocardiogram (ECG) that indicates that the right or both ventricles are enlarged, while in older children the ECG may be normal or show that the left ventricle is enlarged.
The right ventricle pumps blood into the pulmonary artery and blood reaches the aorta through a patent ductus arteriosus (see description in the previous section).
In pulmonary stenosis, the pulmonary valve does not open properly, forcing the right ventricle to work harder.
As the left ventricle works harder to pump blood through the body, it becomes enlarged.
Subaortic stenosis is a narrowing of the left ventricle below the aortic valve that limits the flow of blood from the left ventricle.
Eisenmenger's complex is a ventricular septal defect coupled with pulmonary high blood pressure, an enlarged right ventricle, and sometimes an aorta that is not positioned correctly.
The other defects are an overly muscular right ventricle and an aorta that lies over the ventricular septal defect.
In tricuspid atresia, the baby lacks a triscupid valve and blood cannot flow properly from the right atrium to the right ventricle.
In pulmonary atresia, the baby lacks a pulmonary valve and blood cannot flow properly from the right ventricle into the pulmonary artery and on to the lungs.
Ebstein's anomaly is a rare congenital syndrome that causes malformed tricuspid valve leaflets, which allow blood to leak between the right ventricle and the right atrium.
Arterial switch, to correct transposition of the great arteries, involves connecting the aorta to the left ventricle and connecting the pulmonary artery to the right ventricle.
Transposition of the great arteries also can be corrected by the Damus-Kaye-Stansel procedure, in which the pulmonary artery is cut in two and connected to the ascending aorta and the farthest section of the right ventricle.
For transposition of the great arteries, venous switch creates a tunnel inside the atria to re-direct oxygen-rich blood to the right ventricle and aorta, and venous blood to the left ventricle and pulmonary artery.
Diastolic blood pressure-Diastole is the period in which the left ventricle relaxes so it can refill with blood; diastolic pressure is therefore measured during diastole.
Mitral valve prolapse-A heart defect in which the mitral valve of the heart (which normally controls blood flow from the left atrium to the left ventricle) becomes floppy.
Normally, the pulmonary artery carries blood from the right ventricle to the lungs.
The aorta carries blood from the left ventricle to the vessels of the rest of the body.
It goes first to the right atrium of the heart and then to the right ventricle where it is pumped to the lungs.
After the lungs, the blood flows to the left atrium, then the left ventricle pumps the blood out through the aorta to the rest of the body, thereby supplying the body with oxygenated blood.
This condition causes oxygen depleted blood to be circulated to the body because the aorta is connected to the right ventricle.
Blood returning to the heart goes to the right atrium and ventricle, and then it goes into the aorta for distribution throughout the body instead of to the lungs to be oxygenated.
At the same time, blood in the lungs goes to the left atrium, the left ventricle, but then back to the lungs rather than going to the body because the pulmonary artery is connected to the left ventricle.
The ventricle on the left side pumps blood full of oxygen through the body; the ventricle on the right side pumps the same blood through the pulmonary artery to the lungs to take up oxygen.
The left ventricle operates at pressures about four times as high as the right ventricle.
They include: ventricular septal defect (abnormal passageway between the right and left ventricles), displaced aorta, narrowed pulmonary valve, thickened right ventricle wall.
Second, the right side of the heart (ventricle) hypertrophies (gets more muscular) from the extra exercise demanded of it.
Type II malformation, sometimes called Arnold Chiari malformation, is more severe than Type I and involves herniation of a more significant part of the cerebellum, part of the fourth ventricle, and parts of the brain stem.
In these children, hydrocephalus is caused by obstruction of the fourth ventricle due to its herniation into the spinal column.
Normal pressure hydrocephalus is marked by ventricle enlargement without an apparent increase in CSF pressure.
Also refers to a small tube placed in a ventricle of the brain to direct cerebrospinal fluid away from a blockage into another part of the body.
The effects are an increase in stroke volume or the amount of blood flow caused by a single contraction of the left ventricle.
In Anodon and the majority of lamellibranchs the ventricle surrounds the intestine; in the oyster the two are quite independent, the intestine passing above the pericardium.
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