____________________ is converted to ____________________ and then acts as an enzyme to activate fibrinogen

Fill in the blank(s) with correct word


Prothrombin, thrombin

Anatomy & Physiology

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Epinephrine increases the force of contraction of cardiac muscle by:

A. increasing the amount of Ca++ in the SR for release to the cytosol B. increasing the level of myosin light-chain phosphorylation C. inhibiting the ryanodine receptor D. increasing Ca++ extrusion through the sarcolemmal Ca++ pump E. shortening the duration of the action potential

Anatomy & Physiology

Cardioinhibitory centers in the ________ receive input from ________.

A. medulla oblongata; chemoreceptors in the aortic arch B. thalamus; chemoreceptors in the medulla oblongata C. pons; baroreceptors in the internal carotid D. cortex; proprioceptors in the muscles E. hypothalamus; proprioceptors in the joints

Anatomy & Physiology

Which muscle would be most essential for blowing a trumpet?

A. Masseter B. Platysma C. Frontalis D. Zygomaticus major E. Buccinator

Anatomy & Physiology

Which of the following is not associated with the frontal bone(s)?

A) malar flush B) glabella C) metopic suture D) supraorbital foramen E) roof of the orbit

Anatomy & Physiology