Haustral contractions ________
A) are powerful contractile waves
B) propel food residue from the small intestine into the large intestine
C) move food residue from one haustrum to the next haustrum within the large intestine
D) occur three to four times daily
E) propel food from the stomach into the small intestine
C
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This figure shows the knee joint. What structure does number 4 indicate?
A. Posterior cruciate ligament B. Fibular collateral ligament C. Medial meniscus D. Lateral meniscus E. Anterior cruciate ligament
Acetylcholine
a. opens voltage-gated Na+ channels in skeletal muscle fibers, which causes depolarization of the muscle fibers b. may decrease the permeability of the motor end plate to Na+ and K+ when combined with the receptor sites on the motor end plate c. always depolarizes skeletal muscle fibers and postganglionic neurons d. does both a and b e. does both b and c
A pH of 4 is ____ times as acidic as a pH of 7
a. 10 b. 100 c. 1,000 d. 10,000 e. 100,000
Which auditory ossicle is connected to the tympanic membrane?
What will be an ideal response?