Male pigs have a retractable penis that can be withdrawn into which orifice?
A) urinary bladder
B) urogenital sinus
C) external urogenital orifice
D) renal capsule
C
Explanation:
A) The urinary bladder stores urine.
B) In a female pig, the vagina and the urethra empty into the urogenital sinus.
D) The renal capsule is a fibrous sac that encases the kidneys.
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a) pituitary gland b) hypothalamus c) pineal gland
Which of these would NOT increase pressure on the vessel walls?
What will be an ideal response?
Sexual reproduction entails the union of two gonads to form a zygote.
Answer the following statement true (T) or false (F)
Which of the following statements about the endocrine system is true?
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