An ectopic pacemaker is an area of the myocardial conducting system, other than the atrioventricular node, that initiates cardiac depolarization
Indicate whether the statement is true or false.
FALSE
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Which of the following is considered the first segment of the renal tubule?
A. Glomerulus B. Proximal convoluted tubule C. Distal convoluted tubule D. Collecting tubule
What hormone is made by the parafollicular cells of the thyroid gland?
What will be an ideal response?
Which of the following anatomical features of bones is correctly matched with its function?
A. Sinus - a tunnel in a bone B. Tubercle - lining of a joint C. Foramen - a hole for a blood vessel D. Foramen - a depression in a bone E. Body - attachment point for a tendon or ligament
The filamentous protein network that serves as the attachment site for actin myofilaments is called the _____.
a. myosin myofilament b. actin myofilament c. sarcomere d. Z disk e. cross-bridge