Anatomy of the Testis

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Questions and Answers

What is the shape of the testis?

Cylindrical

Rectangular

Ovoid (correct)

Spherical

What surrounds each testis?

A mesh of muscles

A network of blood vessels

A layer of fat

A tough fibrous capsule (correct)

What is the function of the fibrous septa in the testis?

To connect the testis to the epididymis

To divide the interior of the testis into lobules (correct)

To produce sperm

To regulate the temperature of the testis

What is the name of the capsule that surrounds the testis?

Tunica albuginea Signup and view all the answers

What is the term for the tubules that collect sperm from the seminiferous tubules?

Seminephrus tubules Signup and view all the answers

What is the location of the prostate?

Between the neck of the bladder and the urogenital diaphragm Signup and view all the answers

What type of tissue do the glands of the prostate embed in?

A mixture of smooth muscle and connective tissue Signup and view all the answers

Where do the ducts of the prostate glands open into?

The urethra Signup and view all the answers

What is the main component of the prostate gland?

Glands Signup and view all the answers

What is the role of prostaglandins in semen?

To cause the uterus to contract Signup and view all the answers

What is the purpose of uterine contractions during fertilization?

To help the sperm propel towards the egg Signup and view all the answers

What lies below the prostate gland?

The urogenital diaphragm Signup and view all the answers

What is a function of prostaglandins in the female reproductive system?

To induce uterine contractions Signup and view all the answers

What do some investigators believe about the role of uterine contractions in fertilization?

They help propel sperm towards the egg Signup and view all the answers

What is found in semen that helps with fertilization?

Prostaglandins Signup and view all the answers

What is the location where the ejaculatory duct opens into?

Prostatic part of the urethra Signup and view all the answers

What is the function of the ejaculatory duct?

To drain the seminal fluid into the prostatic urethra Signup and view all the answers

Where does the ejaculatory duct pierce?

Posterior surface of the prostate Signup and view all the answers

What is the contents of the fluid drained by the ejaculatory duct?

Seminal fluid Signup and view all the answers

What is the structure that the ejaculatory duct is associated with?

Prostate Signup and view all the answers

What is the root of the penis composed of?

Three masses of erectile tissue Signup and view all the answers

What are the two parts that make up the root of the penis?

Bulb and crura Signup and view all the answers

What is the bulb of the penis?

A mass of erectile tissue Signup and view all the answers

What is the function of the crura of the penis?

To facilitate erection Signup and view all the answers

What is unique about the body of the penis?

It hangs free Signup and view all the answers

Study Notes

Testis Structure

The testis is shaped like an ovoid and is white in color.
It is surrounded by a tough fibrous capsule called the tunica albuginea.
The interior of the testis is divided into lobules by a series of fibrous septa that extend from the inner surface of the capsule.

Ejaculatory Duct

The ejaculatory duct pierces the posterior surface of the prostate and opens into the prostatic part of the urethra.
Its function is to drain seminal fluid into the prostatic urethra.
It is located between the neck of the bladder above and the urogenital diaphragm below.

Prostate Glands

The numerous glands of the prostate are embedded in a mixture of smooth muscle and connective tissue.
The ducts of these glands open into the prostatic urethra.

Semen Composition

Semen contains prostaglandins, which are chemicals that cause the uterus to contract.
Uterine contractions may help propel the sperm toward the egg.

Penis Structure

The penis has a fixed root and a body that hangs free.
The root of the penis is composed of three masses of erectile tissue: the bulb of the penis and the right and left crura of the penis.