Which of the following muscles is responsible for medially rotating the tibia on the femur when the knee is flexed?

A. Piriformis
B. Semitendinosus
C. Adductor brevis
D. Vastus medialis
E. Sartorius


B. Semitendinosus

Anatomy & Physiology

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Once a planned movement is under way, it is usually carried out with no further modifications until it is finished

Indicate whether the statement is true or false.

Anatomy & Physiology

Bacteria in the large intestine

A. produce vitamins. B. break down some undigested food. C. produce gas. D. All apply.

Anatomy & Physiology

Collectively, the hollow cavities in the maxillae, ethmoid, sphenoid, and frontal bones are called the ________ sinuses.

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

Anatomy & Physiology

Which of the following is NOT one of the immune system's components?

A. Barriers B. NSAIDs C. Inflammation D. Chemicals

Anatomy & Physiology