The regular menstruation cycle usually occurs every _________

Fill in the blank(s) with the appropriate word(s).


Answer: 28 days

Anatomy & Physiology

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What is the body's first line of defense against the invasion of disease-causing microorganisms?

A) phagocytes B) natural killer cells C) skin and mucous membranes D) inflammatory response E) fever

Anatomy & Physiology

Which hormone is produced by the kidneys to stimulation production of red blood cells by the bone marrow?

A) relaxin B) resistan C) secretin D) cholecystokinin (CCK) E) erythropoietin

Anatomy & Physiology

A lesion in which structure would cause a person to have an erratic waking/sleeping cycle?

A. Medial geniculate nucleus B. Suprachiasmatic nucleus C. Pituitary gland D. Satiety center E. Mammillary nucleus

Anatomy & Physiology

Which of the following is NOT true of the knee joint?

A. The knee is a modified hinge joint. B. The knee contains a lateral meniscus and a medial meniscus. C. The ACL (anterior cruciate ligament) is positioned so that it helps prevent hyperextension of the knee. D. It contains a condylar joint between the patellar surface of the femur and the patella. E. All of these are true of the knee joint.

Anatomy & Physiology