Which of the following ECG components represents a lack of electrical activity?

A) Isoelectric line
B) P-R interval
C) Q-T interval
D) T-wave


Answer: A

Anatomy & Physiology

You might also like to view...

The point of the elbow is formed by the ________ of the ulna.

A) supraglenoid tubercle B) infraglenoid tubercle C) infraspinous fossa D) olecranon process E) radial tuberosity

Anatomy & Physiology

The stimulus for secretion of atrial natriuretic hormone is increased

A. blood osmolality. B. aldosterone production. C. blood pressure in atria of heart. D. blood pressure in kidney's afferent arterioles. E. blood pressure in the ventricles of the heart.

Anatomy & Physiology

The secretion of parathyroid hormone is controlled primarily by the

A) hypothalamus. B) pituitary gland. C) concentration of blood calcium. D) thyroid gland.

Anatomy & Physiology

The hormone that creates a sense of hunger is

A. leptin. B. gastrin. C. ghrelin. D. melatonin.

Anatomy & Physiology