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Questions and Answers
What is the function of the sinus venosus in the heart of scoliodon?
What is the function of the sinus venosus in the heart of scoliodon?
- Receiving venous blood from all parts of the body
- Highly contractile and origin of heart's beating (correct)
- Opening into the auricle
- Guarding the auriculo-ventricular aperture
Where is the heart situated in the body of scoliodon?
Where is the heart situated in the body of scoliodon?
- Within the brain cavity
- Between two series of gill pouches (correct)
- Dorsally placed next to the liver
- Ventrally placed near the tail
What is the structure of the auricle in the heart of scoliodon?
What is the structure of the auricle in the heart of scoliodon?
- Tubular and highly contractile chamber
- Large, triangular, and thin-walled chamber (correct)
- Thin-walled chamber dorsally placed near the liver
- Thick, muscular, and spongy chamber
What does the ventricle of the heart of scoliodon communicate with through a slit-like aperture?
What does the ventricle of the heart of scoliodon communicate with through a slit-like aperture?
What do the receiving chambers (sinus venosus and auricle) in the heart of scoliodon receive?
What do the receiving chambers (sinus venosus and auricle) in the heart of scoliodon receive?
What gives the ventricle of the heart of scoliodon a spongy texture?
What gives the ventricle of the heart of scoliodon a spongy texture?
What is the name of the stout median muscular tube arising from the ventricle in the heart of a frog?
What is the name of the stout median muscular tube arising from the ventricle in the heart of a frog?
What is the function of the serous or pericardial fluid found between the outer pericardium and inner epicardium of the frog's heart?
What is the function of the serous or pericardial fluid found between the outer pericardium and inner epicardium of the frog's heart?
What part of the heart is designated as the venous or branchial heart in the context of frog anatomy?
What part of the heart is designated as the venous or branchial heart in the context of frog anatomy?
Which chamber of the frog's heart is conical in shape with thick muscular walls?
Which chamber of the frog's heart is conical in shape with thick muscular walls?
What does the garden lizard's (Calotes) heart contain between the heart and pericardium?
What does the garden lizard's (Calotes) heart contain between the heart and pericardium?
Where is the heart of the garden lizard (Calotes) placed?
Where is the heart of the garden lizard (Calotes) placed?
What part of the frog's heart is continued forward as the ventral aorta?
What part of the frog's heart is continued forward as the ventral aorta?
What type of blood circulates through the frog's heart?
What type of blood circulates through the frog's heart?
What constitutes the most prominent part of the frog’s heart?
What constitutes the most prominent part of the frog’s heart?
The circulatory system of scoliodon consists of the circulatory fluid called ______
The circulatory system of scoliodon consists of the circulatory fluid called ______
The heart is situated on the ______ side of the body between two series of gill pouches
The heart is situated on the ______ side of the body between two series of gill pouches
The sinus venosus opens into the auricle by sinuauricular aperture which is guarded by a pair of ______
The sinus venosus opens into the auricle by sinuauricular aperture which is guarded by a pair of ______
The receiving chambers (sinus venosus and auricle) receive the ______ blood from all parts of the body
The receiving chambers (sinus venosus and auricle) receive the ______ blood from all parts of the body
The ventricle has a very thick ______ wall
The ventricle has a very thick ______ wall
Its inner surface gives many ______ strands, which gives it a spongy texture
Its inner surface gives many ______ strands, which gives it a spongy texture
The conus arteriosus is continued forward as the ______
The conus arteriosus is continued forward as the ______
The broader part of the frog's heart contains two ______ or auricles
The broader part of the frog's heart contains two ______ or auricles
The ventricle is the most conspicuous and prominent part of the ______
The ventricle is the most conspicuous and prominent part of the ______
The blood vascular system of the frog is ______
The blood vascular system of the frog is ______
The space between the heart and pericardium is filled with ______
The space between the heart and pericardium is filled with ______
The conus arteriosus is a stout median muscular tube arising from the ______
The conus arteriosus is a stout median muscular tube arising from the ______
The heart of the garden lizard (Calotes) is placed in the anterior part of the ______ cavity
The heart of the garden lizard (Calotes) is placed in the anterior part of the ______ cavity
The lumen of the conus arteriosus is provided with two transverse rows of ______ valves
The lumen of the conus arteriosus is provided with two transverse rows of ______ valves
The heart is enclosed within a sac formed of two membranes, an outer pericardium and an inner ______ which closely invests the heart
The heart is enclosed within a sac formed of two membranes, an outer pericardium and an inner ______ which closely invests the heart
The broader part of the heart contains two ______ or auricles, whereas the posterior part has a single ventricle
The broader part of the heart contains two ______ or auricles, whereas the posterior part has a single ventricle
Study Notes
Heart Structure and Function in Scoliodon
- The sinus venosus functions as a receiving chamber in the heart of scoliodon.
- The heart is situated on the ventral side of the body between two series of gill pouches.
- The sinus venosus receives deoxygenated blood from all parts of the body.
Heart Structure and Function in Frog
- The auricle in the heart of the frog has a conical shape with thick muscular walls.
- The ventricle communicates with the conus arteriosus through a slit-like aperture.
- The ventricle has a spongy texture due to its inner surface giving many trabecular strands.
- The conus arteriosus is a stout median muscular tube arising from the ventricle.
- The conus arteriosus is continued forward as the ventral aorta.
- The heart is designated as the venous or branchial heart in the context of frog anatomy.
- The blood vascular system of the frog is a closed system.
- Oxygenated and deoxygenated blood circulate through the frog's heart.
Heart Structure and Function in Garden Lizard (Calotes)
- The heart of the garden lizard contains serous or pericardial fluid between the heart and pericardium.
- The heart is placed in the anterior part of the thoracic cavity.
- The heart has a broad anterior part with two auricles and a posterior part with a single ventricle.
Heart Enclosure and Valves
- The heart is enclosed within a sac formed of two membranes: an outer pericardium and an inner epicardium which closely invests the heart.
- The lumen of the conus arteriosus is provided with two transverse rows of valves.
- The sinus venosus opens into the auricle by a sinuauricular aperture guarded by a pair of valves.
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Description
Test your knowledge on the structure of the heart of Scoliodon, including its components and their functions within the circulatory system.
