Arterioles feed blood into
A) arteriovenous anastomoses.
B) thoroughfare channels.
C) arches.
D) capillaries.
E) venules.
The superior part of the sternum is called the
A) apex.
B) xiphoid.
C) coccyx.
D) manubrium.
E) head.
When potassium channels open and the ions diffuse through the membrane,
A) the inside of the membrane will become more positive.
B) the inside of the membrane will become more negative.
C) there will be almost no effect on transmembrane potential.
D) the membrane will become depolarized.
E) the membrane will depolarize to threshold.
The hair cells of the cochlear duct are located in the
A) organ of Corti.
B) ossicles.
C) crista ampullaris.
D) utricle.
E) saccule.
Disorders involving the vagus nerve might cause
A) food to remain in your stomach longer.
B) a drop in blood pressure.
C) constriction of the pupils.
D) more saliva production.
E) All of the answers are correct.
The ________ of a radioactive substance is the time required for 50 percent of a given
amount of radioisotope to decay.
A) decay-point
B) mid-life
C) deterioration point
D) half-life
E) entropy
The blood vessel that branches to form a right common carotid and a right subclavian
artery is the
A) ascending aorta.
B) aortic arch.
C) brachiocephalic artery.
D) thoracic aorta.
E) axillary artery.
Which structure has pumps to remove calcium ions from the sarcoplasm to produce
relaxation?
Figure 10-1 Skeletal Muscle Fiber
A) 6
B) 7
C) 1
D) 3
E) 2
The function of the hyoid bone is to
A) stabilize the atlas and the axis.
B) anchor the tongue muscles.
C) protect the trachea.
D) attach to ribs.
E) support the mandible.
The study of tissues is called
A) cytology.
B) toxicology.
C) micrology.
D) histology.
E) mycology.
The cell that directly results from the fusion of a secondary oocyte and a spermatozoon
is called a(n)
A) ootid.
B) gastrula.
C) blastula.
D) morula.
E) zygote.
Figure 24-1 The Stomach (dissected)
Identify the stomach region labeled “12”.
A) cardia
B) pylorus
C) body
D) fundus
E) rugae