The human testis contains many Leydig cells (interstitial cells) at various stages of differentiation, some of which have only half the normal number of chromosomes
Indicate whether the statement is true or false
F
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What chemical signal released by healthy endothelial tissue prevents overgrowth of platelet plugs?
a. ATP b. fibrinogen c. prostacyclin d. thromboxane e. thrombopoietin
These connective tissue strands divide lymph nodes into compartments.
A. Capsule B. Cisternae C. Trabeculae D. Valves
The anterior rami form four major plexuses, including all of the following except the ________ plexus
A) brachial B) lumbar C) sacral D) nuchal E) cervical
The internal urethral sphincter is the ________ located at the ________ in males.
A. skeletal muscle; distal end of the urethra B. smooth muscle; junction of the urinary bladder and the urethra C. skeletal muscle; junction of the urinary bladder and the urethra D. smooth muscle; distal end of the urethra