Which is a function of the gonadotropic hormones?
A. stimulating the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH)
B. inhibiting the release of growth hormone
C. inhibiting the release of prolactin
D. inducing the secretion of steroid hormones by the gonads in both males and females
E. stimulating the release of gonadotropin-releasing hormone (GnRH)
D
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The interconnecting tiny arches of bone tissue found in spongy bone are called
A) osteons. B) trabeculae. C) concentric lamellae. D) interstitial lamellae. E) lacunae.
The heart is
a. sympathetically innervated via cardiac nerve fibers b. parasympathetically innervated by vagus nerve fibers c. only partly innervated by the somatic nervous system d. innervated by only the sympathetic division of the autonomic nervous system e. both a and b
Simple squamous epithelium can be found in the lungs because ________.
A. it functions to aid diffusion of gases into and out of the blood B. it uses multiple cell layers to protect delicate lung tissue C. it produces serous fluid, which helps trap inhaled particles D. it produces collagen, which are important in strengthening lung tissue
Which of the following best describes a motor unit?
A) a section of a myofibril from Z disk to Z disk B) one motor neuron and all the muscle fibers innervated by that neuron C) all of the neurons that unite to make a whole muscle contract D) all of the fascicles innervated by several neurons