The laminae of the posterior vertebral arch do not unite atthe midline in individuals with which congenital defect?

a. osteoporosis
b. spina bifida
c. rickets

d. cleft palate


b

Anatomy & Physiology

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The expression "all-or-none" means that ________

A) the compound action potential in a nerve is graded B) the action potential in a neuron may be larger or smaller depending on the amount of stimulation (it is graded) C) the action potential in a neuron always has the same shape and size (amplitude) D) the compound action potential in a nerve always has the same shape and size (amplitude)

Anatomy & Physiology

What is secreted by the liver that classifies it as an excretory organ?

A. Erythropoietin B. Digestive enzymes C. Urea D. All apply.

Anatomy & Physiology

The space between the cheeks or lips and the teeth is called the

A) pharynx. B) larynx. C) fauces. D) vestibule. E) frenulum.

Anatomy & Physiology

In the menstrual cycle, progesterone levels are highest during:

A) the proliferative phase. B) menses. C) the secretory phase. D) ovulation. E) both b and d

Anatomy & Physiology