The channelopathy known as QT syndrome is a result of mutation in ________ channels.
A) calcium
B) chloride
C) sodium, potassium, or calcium
D) potassium
E) sodium
C) sodium, potassium, or calcium
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Answer the following statements true (T) or false (F)
1. By about day 35 of gestation, the heart is beating. 2. By the eighth week of gestation, all organ systems are complete and in place. 3. The lining of the lungs and the lining of the gastrointestinal tract develop from the mesoderm. 4. The brain and spinal cord develop from the ectoderm. 5. The dermis of the skin and the circulatory system develop from the mesoderm.
This figure shows the femur. The feature indicated by number 6 is the
A. intertrochanteric groove. B. intercondylar fossa. C. medial epicondyle. D. lateral epicondyle. E. popliteal surface.
Identify the difference between somatic and autonomic motor reflexes
A) Somatic motor pathways require one motor neuron, and autonomic pathways require two. B) Somatic motor pathways innervate skeletal muscle, and autonomic pathways innervate cardiac muscle, smooth muscle or glands. C) Somatic motor pathways are voluntary, and autonomic motor pathways are involuntary. D) All choices are differences between somatic and autonomic motor pathways.
Hypoxia is/are
A) respiratory or circulatory problems that cause oxygen deficit. B) when a group of cells divide. C) decreased oxygen in tissue. D) stimulated cell growth.