The posterior lobe of the pituitary gland in humans releases
a) TSH and FSH
b) ACTH and LH
c) Oxytocin and vasopression
d) FSH and LH
e) Prolactin and growth hormone
In the gastrointestinal tract sucrose is broken down by
a) dehydrolysis
b) hydrophobic cleavage
c) hydrolysis
d) dehydration linkage
e) dephosphorylation
Hormones from the pituitary affect secondary hormone release from all of the following EXCEPT
a) thyroid
b) adrenal cortex
c) ovaries
d) testes
e) adrenal medulla
An exocrine gastric product which combines with vitamin B12 so that it can be absorbed later in the small intestine is
a) pepsin
b) hydrochloric acid
c) mucus
d) an intrinsic factor
e) trypsin
The basic contractile unit in striated muscle is
a) the muscle fiber
b) the myofibril
c) the sarcomere
d) the myofilament
e) the thin filaments
The connective tissue sac enclosing the heart is called the
a) endothelium
b) myocardium
c) pericardium
d) vena cava
e) endocardium
The taste buds of the tongue are what kind of receptors?
a) proprioceptors
b) tastereceptors
c) osmoreceptors
d) mechanoreceptors
e) chemoreceptors
Striated (skeletal) muscle fibers exhibit
a) few mitochondria
b) alternating A bands and I bands in a transverse pattern
c) only one nucleus
d) a spiral arrangement of muscle filaments
e) a branching pattern of muscle filaments
All the following are secreted by the pancreas EXCEPT
a) chymotrypsin
b) trypsin
c) pepsin
d) carboxypeptidase
e) lipase
In myelinated axons and dendrites , the action potential leaps from one node of Ranvier to the next by a process called
a) hydrophobic induction
b) salutatory conduction
c) electron transport
d) electrophillic conduction
e) constriction and dilation
Hydrogen ions are NOT free to lower the blood's pH because they are
a) removed through the action of carbonic anhydrase
b) bound to water
c) bound to hemoglobin
d) removed by diffusion
e) bound to carbon dioxide
Which of the following does NOT perform excretory functions?
a) Kidneys
b) Lungs
c) Skin
d) Liver
e) Lymph nodes
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