(BSCI 252) Cardiovascular System
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/44
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
45 Terms
The 2 upper chambers of the heart are…
Right and Left Atrium
The 2 lower chambers of the heart are…
Right and Left Ventricle
White matter is.
connections between the brain; axon
Afferent Vessels bring blood where?
Back to the heart
afferent refers to…
bringing something back to the main system
the 2 vascular pathways are…
Systemic and Pulmonary
The difference between Pulmonary and Systemic is…
The pulmonary circulation takes place from the heart to the lungs and then back to the heart.
The systemic circulation takes place from the heart to the body parts and then back to the heart
The systemic pathway has more/ less O2 and more/ less CO2 rich blood…
more O2 and less CO2
Hypoxia refers to which pathway system?
the Pulmonary Circuit
the Systemic CO2 poor and O2 rich has the advantage of…
being able to maintain the pH for acid
Where is the heart located?
Mediastinum; sandwiched between the ling and diaphragm
Is the heart upside down?
yes, the apex is at the bottom
What is the name of the membrane covering the heart?
the Pericardium Membrane
Does the heart contain bundles of fasicles?
yes, like the skeletal muscle
what do skeletal and cardiac muscle have in common?
they are both striated
How are heart muscle cells?
they are Multinucleate because they are long
TorF: Gap and Desmosome Junctions pertain to the heart?
true
Gap junctions perform…
communication pubs that allow for contraction
Desmosomes are important for…
preventing tearing via being and anchor
___, ___,___, ___, are what give the striated appearance
Z-disc, I band, A band, H zone,
Since fluid can’t compress what happens to compact pressure?
it increases
the role of the Intercalated disc is to…
prevent the muscle pulling apart
During contraction what happens to fluid pressure?
It increases
The receiving chambers and exiting chambers are.?
R: Atrium
E: Ventricle
Which atrium is pulmonary and systemic?
LA: Pulmonary
RA: Systemic
the 4 arteries are...
afferent arteries
TorF: the more stronger the heart contraction the shorter it becomes?
true
how does the heart prevent backflow?
using cusps and leaves
the Right AV a.k.a Tricuspid has how many leaves?
3
The Left AV a.k.a Mitrilvalves has how many leaves?
2
the Semilunar has how many cusps?
3
The left ventricle pumps blood systemic/ pulmonary?
systemic
Hypertension is a result of…
forced blood pathway via a narrow vessel
As a result of hypertension the heart enlarges meaning..
Moree tissue, more cells and so more oxygen
If the Heart Lumen is smaller then
force is easier and so there is more resistence
Myocardial Action Potential 4 is?
heart at rest
Myocardial Action Potential 1 is?
a stark jump of contraction, Depolarization takes place as a result of sodium flowing in the cell.
the 2 sodium gates are … and take place on AP
activation and inactivation; activ-threshold inact-peak
Myocardial Action Potential 2 is?
Potassium channels are closed so Ca influx is slow, a stable state
Myocardial Action Potential 2 is refered to as the…
Plateu
Myocardial Action Potential 3 is?
Repolarization; Ca inactivates and K efflux out the cell, it os rapid
Absolute Refractory is when ___ AP can occur.
no second
During Abs. Refr. is the muscle contracting or relaxing?
relaxing
A Tetanic contraction is …
constant/ steady
If the heart is forever in Tetanic is that okay?
no