Anatomy of the Ganglion Cell and Cardiac Muscles Quiz

The ganglion cell is made up of multipolar neurons having connection with the lateral nerves. This median ganglion is responsible for initiating heart beats in ________ (Lumbricus and Arenicola).

Physiological properties of Cardiac muscles: Cardiac cycle is the complete round of ________ and ________.

Heart rate is the number of beats per minute, typically ranging from ________ to ________ bpm.

Cardiac output is the amount of blood ejected from the heart in one minute. It depends on factors like the force of contraction, amount of blood entering the ventricles during diastole, and the ________.

Regulation of the Heart: P Wave represents depolarization of the arterial musculature which spreads radially from the sinuauricular node to the auriculo-ventricular node; atrial depolarization. PR Interval is the delay in transmission of impulse at the AV-node; period from start of atrial depolarization to start of ventricular ________.

Regulation of the Heart: QRS Complex represents ventricular depolarization; spreading through the auriculo-ventricular bundle of His and the ________ fibers.

Reptiles have ventricle became incompletely divided by incomplete ventricular ______

Birds and Mammals have a complete ventricular ______

The mammalian heart consists of Atrium (RA, LA) and ______

Cardiac muscles are ______ and Contractile

Cardiac muscles have a longer Absolute refractory period than ______

The long refractory period in cardiac muscle guarantees a period of ______ between cardiac contractions

_______ is the resting potential of cardiac muscle cells.

Cardiac muscles exhibit _______ rhythmicity.

The _______ is the pacemaker of the heart.

Myogenic hearts show rhythmic activity due to the _______ themselves.

In fish and amphibians, heart beat is initiated at the _______ venosus.

_______ hearts are innervated by nerves and regulation is dependent upon nervous regulation.