Which of the following hormone types does not require membrane receptors to invoke cell responses?
a. peptides
b. catecholamines
c. steroids
d. thyroid hormone
e. both (c) and (d) above.
E
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________ epithelium is found inside the eyes
A) Simple squamous B) Simple cuboidal C) Simple columnar D) Pseudostratified columnar E) Stratified squamous
There are this many vertebrae in the thoracic region______.
A. 9 B. 10 C. 11 D. 12
When acetylcholine binds to receptors at the motor end plate, the sarcolemma becomes
A) more permeable to sodium ions. B) less permeable to sodium ions. C) more permeable to calcium ions. D) less permeable to potassium ions. E) less permeable to potassium and sodium ions.
What is the barrier between plasma and interstitial fluid?
a. blood vessel walls b. the skin c. cell membrane d. interstitial space e. spinal canal