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Exploring Anatomy & Physiology in the Laboratoryl: Core Concepts  2nd Edition

Exploring Anatomy & Physiology in the Laboratoryl: Core Concepts (2nd Edition)

Book Edition2nd Edition
Author(s)Amerman
ISBN9781617317804
PublisherMorton Publishing
SubjectBiology

Chapter 16, End of Chapter, Quiz, Exercise 1

Page 455

Here is a tip:

One important responsibility of the male gonads is the secretion of testosterone [hormone].

Explanation

The labelings have been done from top right to top left in clockwise manner as follows:

  • Prostate gland: This gland is another exocrine gland of the male reproductive system and is located below the urinary bladder. Its primary function is to produce prostate fluid. This fluid forms a part of the semen's volume.
  • Membranous urethra: It is that part of the male urethra that exists between the prostatic and spongy urethrae. This part of the urethra is not much dilated. 
  • Corpus spongiosum: It is one of the erectile bodies of the male external genitalia [penis]. It encircles the spongy urethra and contains blood vessels. Its primary function is to prevent the testes from compressing during penile erection.
  • Corpora cavernosa: They are paired erectile structures of the penis. They contain vascularized spaces that get engorged with blood during erection.
  • Glans penis: It is the head of the penis. It plays an important role in protecting it.
  • External urethral orifice: Urine leaves the bladder through the external urethral orifice. It is a common opening for semen and urine in males that is located on the topmost part of the glans penis.
  • Spongy urethra: It is the longest part of the male urethra that is surrounded by a voluntary sphincter urethral muscle and it opens into the external urethral orifice. 
  • Seminal vesicle: It is one of the exocrine glands in the male reproductive tract. It produces a fluid that contributes to semen formation.

Verified Answer

The following labelings have been done from top right to top left in clockwise manner:

  • Prostate gland
  • Membranous urethra
  • Corpus spongiosum
  • Corpora cavernosa
  • Glans penis
  • External urethral orifice
  • Spongy urethra
  • Seminal vesicle
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