If you are looking at the back of your hand and bend your wrist backward to admire a new ring, which of the following actions are you performing?

A. Dorsiflexing your hand
B. Hyperextending your wrist
C. Extending your wrist
D. Flexing your wrist
E. Adducting your wrist


B. Hyperextending your wrist

Anatomy & Physiology

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Which of the following is known to be a second messenger?

A. Adenylyl cyclase B. Epinephrine C. Phospholipase C D. ATP E. Diacylglycerol

Anatomy & Physiology

What is the main reason a patient with Parkinson disease cannot be treated with dopamine?

A. Acetylcholine is the main neurotransmitter that is deficient. B. Injecting dopamine only makes the substantia nigra down-regulate its own production of dopamine. C. Dopamine is highly addictive, creating a dependence in the patient that is worse than Parkinson disease. D. Dopamine cannot cross the blood-brain barrier, and it has too many systemic side effects. E. Dopamine is a protein that is digested in the stomach before it can enter a person's circulation.

Anatomy & Physiology

A major function of serous membranes is to decrease friction

Indicate whether this statement is true or false?

Anatomy & Physiology

Which vessels branch from the subclavian artery and fuse to form the basilar artery to deliver blood to the brain?

A) Internal carotid arteries B) Middle cerebral arteries C) Ophthalmic arteries D) Vertebral arteries

Anatomy & Physiology