When a person hyperventilates, there are lower than normal levels of PCO2 and hydrogen ion in arterial blood, a condition called respiratory alkalosis.

Answer the following statement true (T) or false (F)


True

Anatomy & Physiology

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A piece of gauze can be used to make a cat muzzle

Indicate whether the statement is true or false

Anatomy & Physiology

The first event in muscle fiber contraction is that

A) the muscle fiber membrane is stimulated and a muscle impulse travels deep into the fiber through transverse tubules. B) acetylcholine diffuses across a gap at a neuromuscular junction. C) calcium ions diffuse from sarcoplasmic reticulum into the sarcoplasm and bind to troponin molecules. D) acetylcholine is released from the end of the motor neuron.

Anatomy & Physiology

Choose the correct description of a typical medium-sized vein.

A) In these vessels, the thin tunica media is surrounded by a thick tunica externa composed of mostly collagen fibers. B) Ranging from 2 mm to 9 mm in diameter, its thin tunica media consists of one to two layers of smooth muscle cells. C) It has a diameter of approximately 0.4 cm and has more smooth muscle cells and fewer elastic fibers. D) It ranges from 2 mm to 9 mm in diameter, and the relatively thick tunica externa has longitudinal bundles of elastic and collagen fibers. E) It has a diameter up to 2.5 cm, and its tunica media is dominated by elastic fibers rather than smooth muscle cells.

Anatomy & Physiology

The female pelvis typically has which of the following characteristics?

a. narrow, U-shaped greater sciatic notch b. wide subpubic angle, greater than 100 degrees c. short, triangular pubic body d. smaller, heart-shaped pelvic inlet

Anatomy & Physiology