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154
26

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Anatomy

Abdomen

Question 151 of 180

The ductus deferens originates from which of the following structures:

Answer:

The ductus deferens continues from the tail of the epididymis.

Ductus Deferens

Anatomy / Abdomen / Male Reproductive System

Last Updated: 11th April 2019

Spermatozoa from the testis collects in the epididymis, the tail of which is continuous with the ductus deferens.

Anatomical Course

The ductus deferens ascends in the scrotum as part of the spermatic cord and passes through the inguinal canal in the anterior abdominal wall. After exiting the inguinal canal through the deep inguinal ring, it enters the pelvic cavity and descends medially on the pelvic wall, deep to the peritoneum, and crosses the ureter posterior to the bladder. It continues inferomedially along the base of the bladder, anterior to the rectum, almost to the midline where it is joined by the duct of the seminal vesicle to form the ejaculatory duct.

The ejaculatory duct penetrates through the prostate gland to connect with the prostatic urethra.

By CFCF (Own work) [CC BY-SA 3.0 , via Wikimedia Commons

Male Reproductive System. (Image by CFCF (Own work) [CC BY-SA 3.0 , via Wikimedia Commons)

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Close
  • Biochemistry
  • Blood Gases
  • Haematology
Biochemistry Normal Value
Sodium 135 – 145 mmol/l
Potassium 3.0 – 4.5 mmol/l
Urea 2.5 – 7.5 mmol/l
Glucose 3.5 – 5.0 mmol/l
Creatinine 35 – 135 μmol/l
Alanine Aminotransferase (ALT) 5 – 35 U/l
Gamma-glutamyl Transferase (GGT) < 65 U/l
Alkaline Phosphatase (ALP) 30 – 135 U/l
Aspartate Aminotransferase (AST) < 40 U/l
Total Protein 60 – 80 g/l
Albumin 35 – 50 g/l
Globulin 2.4 – 3.5 g/dl
Amylase < 70 U/l
Total Bilirubin 3 – 17 μmol/l
Calcium 2.1 – 2.5 mmol/l
Chloride 95 – 105 mmol/l
Phosphate 0.8 – 1.4 mmol/l
Haematology Normal Value
Haemoglobin 11.5 – 16.6 g/dl
White Blood Cells 4.0 – 11.0 x 109/l
Platelets 150 – 450 x 109/l
MCV 80 – 96 fl
MCHC 32 – 36 g/dl
Neutrophils 2.0 – 7.5 x 109/l
Lymphocytes 1.5 – 4.0 x 109/l
Monocytes 0.3 – 1.0 x 109/l
Eosinophils 0.1 – 0.5 x 109/l
Basophils < 0.2 x 109/l
Reticulocytes < 2%
Haematocrit 0.35 – 0.49
Red Cell Distribution Width 11 – 15%
Blood Gases Normal Value
pH 7.35 – 7.45
pO2 11 – 14 kPa
pCO2 4.5 – 6.0 kPa
Base Excess -2 – +2 mmol/l
Bicarbonate 24 – 30 mmol/l
Lactate < 2 mmol/l

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