Semen and Male Reproductive System Quiz

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What is the normal range for semen volume?

1.5-5 mL (correct)

3-7 mL

1-3 mL

0.5-2 mL

What can a low semen volume indicate?

An infection in the seminal vesicles

An obstruction in the ejaculatory ducts (correct)

Increased seminal vesicle secretions

Decreased sperm motility

What is the normal pH range for semen?

6.0-7.0

7.1-8.0 (correct)

6.5-7.5

7.5-8.5

What can an acidic semen pH indicate?

One or both seminal vesicles are blocked Signup and view all the answers

What is the typical range for sperm count?

20-160 million/mL Signup and view all the answers

What is the method used to perform a sperm count?

Diluting the specimen and counting the cells in a Neubauer chamber (Hemocytometer) Signup and view all the answers

What is the primary function of the sperm?

To carry genetic information and fertilize the egg Signup and view all the answers

Which component of the sperm is responsible for its motility?

Midpiece and tail Signup and view all the answers

What is the primary source of fructose in semen?

Seminal vesicles Signup and view all the answers

Which gland contributes the least to the production of seminal fluid?

Testicles Signup and view all the answers

What is the primary function of the acrosomal cap in sperm?

To facilitate the penetration of the ovum Signup and view all the answers

Which component of the seminal plasma provides nourishment and protection to the sperm?

Mucus and secretions of accessory glands Signup and view all the answers

Which of the following is NOT a component of seminal fluid?

Glucose Signup and view all the answers

What is the primary function of the prostate fluid?

To contain proteolytic enzymes and zinc Signup and view all the answers

Which fluid serves as a lubricant during sexual intercourse and prepares the urethra for ejaculation?

Bulbourethral fluid Signup and view all the answers

What is the primary function of semenogelin, a protein found in semen?

To form a gel-like protective layer around sperm Signup and view all the answers

During the emission stage of ejaculation, where are the sperm moved from?

The testis and the epididymis Signup and view all the answers

Which of the following is NOT a function of semen?

Facilitating fertilization of the ovum Signup and view all the answers

If 600 sperm are counted in the two WBC counting squares using a 1:20 dilution, what is the sperm count per milliliter?

60,000 sperm/ml Signup and view all the answers

What does the term 'sperm motility' refer to in the context of the text?

The movement and swimming ability of sperm Signup and view all the answers

When should sperm motility be considered normal?

When 50% of the sperm are moving Signup and view all the answers

What are some characteristics that a lab technician would typically assess regarding sperm motility?

Speed and quality of movement Signup and view all the answers

In the Neubauer counting chamber, how is the number of sperm per milliliter calculated when using the five RBC squares?

$\text{Number of sperm counted} \times 1,000,000$ Signup and view all the answers

What components can be found in the diluting fluid used for specimen analysis in the text?

Sodium bicarbonate and formalin Signup and view all the answers

Which statement about sperm morphology is correct?

Misshaped sperm may indicate exposure to toxins or infection Signup and view all the answers

In the eosin-nigrosin stain test for sperm viability, what color indicates living sperm cells?

Bluish-white Signup and view all the answers

What is the minimum percentage of living sperm cells required for normal viability?

75% Signup and view all the answers

Which statement about semen viscosity is true?

Typically, thick semen liquefies within 30-60 minutes Signup and view all the answers

Which of the following is NOT a factor that can influence semen viscosity?

Sperm count Signup and view all the answers

When should semen analysis begin, according to the text?

After liquefaction has occurred Signup and view all the answers