A skydiver's parachute fails to deploy. After some struggle, his reserve chute deploys in time to save his life. However, his landing is harder than normal and he feels his knee slightly hyperextend. He shakes it off and goes about his normal routine. Later that day he begins experiencing knee pain. Two days later he notices that his knee "pops" when he crouches and soon discovers he has dislocated his femur on the knee. What muscle was likely injured initially?
A. Soleus
B. Sartorius
C. Quadriceps femoris
D. Tensor fasciae latae
E. Popliteus
Answer: E
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During the S-T segment, what is occurring within cardiac muscle cells?
A. Sodium is rapidly diffusing out of atrial muscle cells. B. Sodium channels are beginning to open in ventricular cells and calcium is entering through slow channels in atrial cells. C. Calcium is entering and potassium is leaving ventricular cells. D. Potassium is entering atrial cells and sodium is leaving ventricular cells.
Which of the following factors influences the rate of gastric emptying in response to changes in osmolarity?
a. fat in the chyme b. distention of the stomach c. acididity of chyme d. hypertonicity of the duodenal lumen
Answer the following statements true (T) or false (F)
1. The end product of amylase digestion is glucose. 2. Lactose intolerance is caused by the inability of the pancreas to produce the proper amount of lactase. 3. The most abundant end product of carbohydrate digestion is glucose. 4. Protein digestion begins in the mouth. 5. In the stomach, hydrochloric acid converts pepsin to trypsin.
Which of the following pairs is a correct match?
A)Osmosis: active membrane transport process B)Exocytosis: active membrane transport process C)Facilitated diffusion: active membrane transport process D)Endocytosis: passive membrane transport process