A 55-year old woman presents with symmetric stiffness and swelling of the proximal interphalangeal joints of the hands and of the metacarpopharyngeal joints, as well as fatigue, malaise, and myalgia. Symptoms are worse in the morning or after extended inactivity and improve with movement and use throughout the day. Ulna […]

Q1. In Vancouver, British Columbia, the probability of rain during a winter day is 0.58 for spring day is 0.38, for a summer fay is 0.25, and for a fall day is 0.53. Each of these seasons lasts one quarter of the year. What is the possibility of rain on […]

1) The area where the urethra exits the bladder is surrounded by a thickened layer of smooth muscle known as the bladder neck. Male infertility can be caused by various conditions that prevent the normal contraction of the bladder neck during orgasm. Why would failure of bladder neck contraction during […]

A male who has an allele for HD (Huntingtons Disease) mates with a woman who is phenotypically normal. What proportion of thier children will carry the trait (meaning have it but not show the symptons at any time in their life) and what proportion of their children will actually have […]