The Component of the Conduction System Referred to as the Pacemaker

question 15

Multiple Choice

The component of the conduction system referred to as the pacemaker of the heart is the:

• A) atrioventricular (AV) node.
• B) sinoatrial (SA) node.
• C) bundle of His.
• D) bundle branches.

Recognize the role of polygenic transmission in the expression of phenotypic traits.

Understand the basic concepts and structures of transportation problems.

Analyze the effect of constraints such as unavailable routes on the solution and cost of transportation problems.

Determine the number of possible routes and used routes in transportation problems.

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Definitions:

Biceps Femoris

A muscle of the posterior thigh that flexes the knee and extends the hip, part of the hamstring group.

Semimembranosus

A large muscle in the back of the thigh that is part of the hamstrings group and helps in thigh extension and knee flexion.

Extensor Digitorum Longus

A muscle in the lower leg that helps to extend the toes and dorsiflex the foot, aiding in walking and running.

Fibularis Tertius

A small muscle in the lower leg that helps with foot eversion and extension of the toes.