Scrotum Anatomy ARDMS

Testicular blood flow is supplied by (3) arteries, however most of the blood supply is from the _______ arteries.

Deferential Cremasteric Testicular Testicular

The tunica vaginalis is a saccular extension of the ________ into the scrotal chambers. It is composed of two layers: ________ and _______

Peritoneum Visceral Parietal

The tunica albuginea extends (anteriorly/posteriorly) and enters each testicle to help form the _______ _______.

Posteriorly Mediastinum testis

True or false? The testes function as both endocrine and exocrine glands.

True

The seminiferous tubules converge to form the ________ _______. These then enter the mediastinum testis to form a ________ of channels called _______ _______. Then _______ _______ then carry the seminal fluid to the _______.

Tubuli recti Network Rete testis Efferent ductules Epididymis

Seminiferous tubules > _______ _______ > ________ _______ > ________ ductules > ________ _________ > ________ _______

Tubuli recti Rete testis Efferent Ductus epididymis Vas deferens

The dense, fibrous layer of tissue beneath the tunica vaginalis is called _______ _______.

Tunica albuginea

Each teste is surrounded by a double layer of tissue called the _______ ______, which consists of a ________ and _______ covering.

Tunica vaginalis Parietal Visceral

The structure that is surgically interrupted during a vasectomy is the ______ _______.

Vas deferens

The appendix epididymis is thought to be a remnant of the (mesonephric/mullerian/wolffian) duct or a detached ________ duct.

Wolffian Efferent

Components of the spermatic cord (6)

Testicular artery Pampiniform plexus Vas deferens Cremaster muscle Lymphatics Nerves

The visceral layer of the tunica vaginalis covers the ______ and _______

Testis Epididymis

The endocrine function of the testes is to produce ________ which determines male ________.

Testosterone Characteristics

The normal head of the epididymis measures approximately ___-___mm

10-12

Scrotal wall thickness ranges between ___-___ mm.

2-8

Adult testicles measure ___-___cm length, ___-___cm width and ___cm AP.

3-5 2-4 3

The epididymis is a _______ structure composed of a _______, ________ and ________. It is attached to the ________ and ________ scrotal Wall.

Coiled Head Body Tail Testicle Posterior

The testicular arteries emanate from the anterior ______ ______ just below the level of the ________ arteries.

Abdominal aorta Renal

The appendix vas is positioned between the _______ and ______ of the epididymis.

Body Tail

The testicular artery divides into a _______ and ______ (intratesticular) branches.

Capsular Centripetal

At their junction, the seminal vesicles and the vas deferens combine to create the ________ _______.

Ejaculatory duct

The efferent ductules converge to form a single convoluted duct (ductus ________) at the _______ of the epididymis.

Epididymis Head

The appendix epididymis is small stalk projecting off the _______ _______.

Epididymis head

The cremasteric artery is also known as the _______ ______ artery.

External spermatic

The head of the epididymis (______ ______) is located adjacent to the _______ pole of the tesstis.

Globus major Superior

The tail of the epididymis (______ ______) forms an acute angle and courses (caudally/cephalad) as the _______ _______.

Globus minor Cephalad Vas deferens

The largest part of the epididymis is the _______.

Head

The appendix testis is positioned between the ________ of the _______ and the _______ _______ of the _______.

Head Epididymis Superior pole Testis

The normal testis has a _______, _______ level echo texture

Homogeneous Medium

The epididymis is (parallel/perpendicular) to the testicle.

Parallel

The right testicular vein drains into the ______ ______ ______ when the left testicular vein drains into the ______ _______ _______.

Inferior vena cava Left renal vein

The spermatic cord enters the scrotum through the _______ ______.

Inguinal canal

The epididymis is normally _______ or slightly ________ to the testis.

Isoechoic Hyperechoic

The echogenic linear band that extends longitudinally within the testes is called the ______ _______.

Mediastinum testis

Multiple septations arise from the tunica albuginea to form the ________ _______, ______-shaped compartments that contain the _______ ______

Mediastinum testis Wedge Seminiferous tubules

The appendix vas is a remnant of the (mesonephric/mullerian/wolffian) duct.

Mesonephric

The scrotum is externally divided at the ________ into two compartments by the ______ ______. Internally, it is divided by the _______ _______.

Midline Median raphe Tunica dartos

The appendix testis is a remnant of the (mesonephric/mullerian/wolffian) duct.

Mullerian

If visualized the normal appendage appears as a small _______ projection of tissue.

Oval

Venous drainage of the testicles is performed through the _______ _______, which empties into the _______ ______.

Pampiniform plexus Testicular veins

The parietal layer of the tunica vaginalis line the ________ _______.

Scrotal chamber

The dartos divides the scrotum into two chambers called the _______ _______.

Scrotal raphe

From the vas deferens, sperm is transported to the paired _______ ______, located posterior to the _______ _______ and above the ______ ________.

Seminal vesicles Urinary bladder Prostate gland

Spermatogenesis occurs within the _________ ________.

Seminiferous tubules

The centripetal branches of the testicular artery course along the ________ converging on the _______ _______.

Septula Mediastinum testis

The mediastinum testis forms _________, which are _______-shaped compartments that contain the ________ ________.

Septula Wedge Seminiferous tubules

The exocrine function of the testes is to produce ________ which permits ________.

Sperm Reproduction

The epididymis is responsible for ________ sperm in order for them to _______ as well as ________ sperm to the _______ _______.

Storing Mature Transporting Vas deferens

The scrotum provides a means for _______ _______ for sperm, by way of the _______ muscle.

Temperature control Cremaster