If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?
A) first-class lever
B) second-class lever
C) third-class lever
D) fourth-class lever
C) third-class lever
Anatomy & Physiology
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Of the hormones necessary for menstruation, which one comes from the ovary?
A) Estrogen B) Luteinizing hormone C) Follicle stimulating hormone D) Testosterone
Anatomy & Physiology
Vitellogenin is a phospholipoprotein produced by the
A) Follicle cells. B) Insect fat body. C) Vertebrate liver. D) All of the above
Anatomy & Physiology
How long is the refractory period for men on average after intercourse?
A) men don't have a refractory period B) about 20 seconds C) about 2 minutes D) about 20 minutes E) about 2 hours
Anatomy & Physiology
Bacteria in the small intestine make some vitamins, such as some B and K
Indicate whether the statement is true or false
Anatomy & Physiology