Structure of Heart of Scoliodon
31 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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?

  • 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?

  • 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?

    <p>Auricle</p> Signup and view all the answers

    What do the receiving chambers (sinus venosus and auricle) in the heart of scoliodon receive?

    <p>Venous blood from all parts of the body</p> Signup and view all the answers

    What gives the ventricle of the heart of scoliodon a spongy texture?

    <p>Its inner surface with muscular strands</p> Signup and view all the answers

    What is the name of the stout median muscular tube arising from the ventricle in the heart of a frog?

    <p>Conus arteriosus</p> Signup and view all the answers

    What is the function of the serous or pericardial fluid found between the outer pericardium and inner epicardium of the frog's heart?

    <p>Prevents friction and keeps the heart moist</p> Signup and view all the answers

    What part of the heart is designated as the venous or branchial heart in the context of frog anatomy?

    <p>Ventricle</p> Signup and view all the answers

    Which chamber of the frog's heart is conical in shape with thick muscular walls?

    <p>Ventricle</p> Signup and view all the answers

    What does the garden lizard's (Calotes) heart contain between the heart and pericardium?

    <p>Endocardium</p> Signup and view all the answers

    Where is the heart of the garden lizard (Calotes) placed?

    <p>In the pleuroperitonial cavity</p> Signup and view all the answers

    What part of the frog's heart is continued forward as the ventral aorta?

    <p>Conus arteriosus</p> Signup and view all the answers

    What type of blood circulates through the frog's heart?

    <p>Deoxygenated blood only</p> Signup and view all the answers

    What constitutes the most prominent part of the frog’s heart?

    <p>Ventricle</p> Signup and view all the answers

    The circulatory system of scoliodon consists of the circulatory fluid called ______

    <p>blood</p> Signup and view all the answers

    The heart is situated on the ______ side of the body between two series of gill pouches

    <p>ventral</p> Signup and view all the answers

    The sinus venosus opens into the auricle by sinuauricular aperture which is guarded by a pair of ______

    <p>valves</p> Signup and view all the answers

    The receiving chambers (sinus venosus and auricle) receive the ______ blood from all parts of the body

    <p>venous</p> Signup and view all the answers

    The ventricle has a very thick ______ wall

    <p>muscular</p> Signup and view all the answers

    Its inner surface gives many ______ strands, which gives it a spongy texture

    <p>muscular</p> Signup and view all the answers

    The conus arteriosus is continued forward as the ______

    <p>ventral aorta</p> Signup and view all the answers

    The broader part of the frog's heart contains two ______ or auricles

    <p>atrium</p> Signup and view all the answers

    The ventricle is the most conspicuous and prominent part of the ______

    <p>heart</p> Signup and view all the answers

    The blood vascular system of the frog is ______

    <p>closed</p> Signup and view all the answers

    The space between the heart and pericardium is filled with ______

    <p>serous fluid</p> Signup and view all the answers

    The conus arteriosus is a stout median muscular tube arising from the ______

    <p>ventricle</p> Signup and view all the answers

    The heart of the garden lizard (Calotes) is placed in the anterior part of the ______ cavity

    <p>pleuroperitonial</p> Signup and view all the answers

    The lumen of the conus arteriosus is provided with two transverse rows of ______ valves

    <p>semilunar</p> Signup and view all the answers

    The heart is enclosed within a sac formed of two membranes, an outer pericardium and an inner ______ which closely invests the heart

    <p>epicardium</p> Signup and view all the answers

    The broader part of the heart contains two ______ or auricles, whereas the posterior part has a single ventricle

    <p>atrium</p> Signup and view all the answers

    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.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on the structure of the heart of Scoliodon, including its components and their functions within the circulatory system.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser