The expansible portion of an atrium is called a(n) ________ because it reminded early anatomists of the external ear.
A) atrial sinus
B) coronary sulcus
C) atrial apex
D) interatrial groove
E) auricle
Ans: E) auricle
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Systolic pressure is greater than diastolic pressure due to the force generated by ventricular contraction
Indicate whether this statement is true or false.
Matrix is composed of ________.
A) cells and fibers B) fibers and ground substance C) ground substance and cells D) all organic compounds
Which muscle does not have a proximal attachment on the ischial tuberosity?
A. Biceps femoris B. Quadratus femoris C. Adductor longus D. Semitendinosus E. Semimembranosus
A protein consists of
A. an amine group, a carboxyl group, and an R group. ?B. more than 200 amino acids.? C. between 3 and 20 amino acids.? D. a C-terminal, several nucleic acids, and an N-terminal