100% de satisfacción garantizada Inmediatamente disponible después del pago Tanto en línea como en PDF No estas atado a nada
logo-home
Buscado previamente por ti
Buscado previamente por ti
logo
The Cardiac Cycle 2,40 €
Añadir al carrito
Navegar rápidamente a
Vista previa
  2.  
  3. North-West University (NWU)
  4.  
  5. Physiology (FLGX317)

Notas de lectura

The Cardiac Cycle
 0 veces vendidas
  • Grado
  • Physiology (FLGX317)
  • Institución
  • North-West University (NWU)
  • Book
  • Guyton and Hall Textbook of Medical Physiology

The document includes an overview and in-depth information on the ventricular volume changes, and pressure changes during systole and diastole and the different phases and heart sounds and ECG in the cardiac cycle.

Vista previa 2 fuera de 5  páginas

Información del documento

  • 3 de abril de 2023
  • 5
  • 2021/2022
  • Notas de lectura
  • N/a
  • The cardiac cycle

Temas

  • systole
  • diastole
  • ventricular ejection
  • stroke volume
  • ventricular filling
  • isovolumetric ventricular contraction
  • isovolumetricnbsprelaxation

Libro relacionado

book image

Título del libro:

Autor(es):

  • Edición:
  • ISBN:
  • Edición:

Más resúmenes para

  • SISTEMA DE EXCITACIÓN ESPECIALIZADO Y DE CONDUCCIÓN DEL CORAZÓN
  • Resumen Tiroides, fisiología, Guyton & Hall
  • Homeostasis fisiología resumen Guyton & Hall
Todos para este libro de texto (7)

Escuela, estudio y materia

  • North-West University (NWU)
  • Physiology (FLGX317)
Todos documentos para esta materia (9)

Vendedor

avatar-seller
silenttutor1

Vista previa del contenido

Topic: The Cardiac
Cycle
FLGX 317:
CARDIOLOGY
Questions Notes
Define the following terms: Systole: period of ventricular contraction blood ejection
Systole, diastole, isovolumetric Diastole: period of ventricular relaxation and blood filling
ventricular contraction, Isovolumetric ventricular contraction: First part of systole; ventricles
ventricular ejection, stroke contract but all valves in the heart are closed and so no blood is
volume, ejected
isovolumetric relaxation, Ventricular ejection: increasing pressures in the ventricles exceed that
ventricular filling of in the aorta and pulmonary trunk- and so they valves open blood is
W. p. 380-381. forced out of the ventricles into the aorta and trunk as the ventricular
muscles fibers shorten.
Stroke volume: volume of blood ejected from each ventricle during
systole
Isovolumetric relaxation: First part of diastole; ventricles relax and
aortic and pulmonary valves close, AV valves are also closed; thus no
blood is leaving or entering the ventricles and thus ventricular volume
is unchanged.
Ventricular filling: AV valves open and blood flows from the atria-
atrial contraction at the end of diastole.

What is the relationship ECG show P,Q,R,S,T waves which are electrical voltages generated
between the ECG by the heart and recorded on the ECG.
(electrocardiogram) and the P wave is caused by the spread of depolarization through the atria and
cardiac cycle? G. p. 114. is followed by atrial contraction
QRS wave appear after 0.16 secs which is caused by electrical
depolarization of the ventricles-initiate contraction of the ventricles
and cause ventricular pressure to rise-thus begins slightly after
ventricular systole.
T wave represents stage of repolarization of ventricles- when
ventricular muscle/fibers begin to relax; thus occur before the end of

, ventricular contraction

Discuss the function of the a) Ventricles fill with blood during diastole.
ventricles as a pump under the
following headings:
a) How do the ventricles fill?  during ventricular systole; blood accumulates in the atriums as
AV valves are closed
b) What is the period of  low diastolic values and increased pressures in the atria cause
isovolumetric contraction? AV valves to open
 and blood flows into the ventricles
c) What is the period of  lasts first third of diastole
ejection?  during middle third, only little blood flows -blood from veins
empty into ventricles
d) What is the period of  during last third; atria contract and last bit flows into
isovolumetric relaxation? ventricles.
 20% of filling during each heart cycle.
e) What is the end-diastolic
volume, end-systolic volume b) Period of isovolumetric contraction is
and the ejection fraction?

f) What is the function of the  after ventricular contraction; ventricular pressure rises abruptly
valves?  AV closes
 0.02-0.03 sec needed for pressure build-up to push semilunar
g) What is the relationship valves open
between the heart sounds and  contraction in ventricles occur, but no emptying
the cardiac cycle?  muscle tension is increasing but no muscle fibers are
W. p. 380-384. shortening
G. p. 113-114.
c) Ventricular pressure is when:


 pressure in ventricles rise(L=80 mm Hg & R=8 mmHg)
 semilunar( aortic and pulmonary) valves open
 blood pours out of ventricles
 70% flows out during first third
 30% in nest two thirds
 first third- period of rapid ejection
 last two thirds: period of slow ejection

d) Period of Isovolumetric relaxation:


 end of systole, ventricles relax
 intraventricular pressure decrease rapidly
 large arteries are filled with blood from the contracted
ventricles
 semilunar valves close shut
 0.03-0.06 sec ventricular muscles relax
 ventricular volume is unchanged

Los beneficios de comprar resúmenes en Stuvia estan en línea:

Garantiza la calidad de los comentarios

Garantiza la calidad de los comentarios

Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!

Compra fácil y rápido

Compra fácil y rápido

Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.

Enfócate en lo más importante

Enfócate en lo más importante

Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!

Preguntas frecuentes

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

100% de satisfacción garantizada: ¿Cómo funciona?

Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.

Who am I buying this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller silenttutor1. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for 2,40 €. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

45,681 summaries were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 15 years now

Empieza a vender

Vistos recientemente

Resumen ·

(0)

Neuroscience hoofdstuk 8

Resumen ·

(1)

Statistiek theorie

Resumen ·

(0)

stress management

Notas de lectura ·

(2)

WG 5 EBR 2018-2019

2,40 €
  • (0)
Añadir al carrito
Añadido