Which organelle is enclosed with two membranes and has cristae extending inward from the inner membrane?

A. Endoplasmic reticulum
B. Nucleus
C. Lysosome
D. Golgi complex
E. Mitochondrion


E. Mitochondrion

Anatomy & Physiology

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The partial pressure of oxygen in the pulmonary veins is

a. about 40 mmHg b. equivalent to alveolar partial pressure c. dramatically different than pulmonary arteries partial pressure d. equivalent to the partial pressure of oxygen in the arteriolar ends of systemic capillaries e. all of the above

Anatomy & Physiology

Oxytocin:

a. is released by the posterior pituitary gland b. stimulates uterine contraction c. uses a positive feedback mechanism d. all of the above

Anatomy & Physiology

The right ventricle pumps out blood low in oxygen content, whereas the left ventricle pumps out blood high in oxygen content

Indicate whether the statement is true or false

Anatomy & Physiology

The nucleus of every human cell contains how many chromosomes??

A) ?23 B) ?46 C) ?69 D) ?92

Anatomy & Physiology