BIOL 1410 Lecture Notes - Lecture 26: Epididymis, Rete Testis, Sertoli Cell

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cerisegiraffe538

17 Nov 2014

School

University of Manitoba

Department

Biological Sciences

Course

BIOL 1410

Professor

All

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Document Summary

Biol 1410: anatomy of the human body - lecture 26: reproductive system. Male reproductive system: male reproductive system structures. 2 tunics: tunica vaginalis outer serous membrane derived from peritoneum, tunica albuginea inner fibrous connective tissue capsule divides testis into lobules. Each lobule contains: seminiferous tubules spermatogenesis occurs tubules unite to form rete testis walls contain: i. ii. germ cells in various stages of development. Seminiferous tubules --- rete testis ------ duct system. Duct system: epididymis posterior border of testis stores sperm site where sperm matures (gains motility) enters pelvic cavity loops over posterior bladder, vas (ductus) deferens, ejaculatory duct, urethra. Parts: root, body (shaft, glans (enlarged tip) formed by vas deferens and duct from seminal vesicle through the prostate through urogenital diaphragm prostatic membranous penile (spongy) through corpus spongiosum of penis glans penis opening. 3 bodies of erectile tissue: 2 corpora cavernosa dorsal, 1 corpus spongiosum. Produces ~95% of semen: seminal vesicles (2) ~ 60% of semen: prostate gland (1)

Related Questions

61) How areantiangiogenic drugs used in the treatment of

cancer?

A) These drugsstop the replication of DNA so cancer cells

cannot reproduce.

B) These drugsstop the growth of blood vessels into the

tumor, so the cells "starve" to death.

C) These drugsstop metastasis.

D) These drugsstimulate the immune system.

E) These drugsstimulate the production of free radicals,

which kill cancer cells.

62) Which of the

following is true regarding photodynamic therapy?

A) It involves the use

of light sensitive drugs to target a cancer.

B) It uses magnets to

attract beads coated with a chemotherapeutic drug to acancer.

C) It is presently used

for the treatment of cancers of the breast and ovary.

D) It inhibits

angiogenesis.

E) It involves the use

of antibodies to deliver treatments to a cancer.

63) Which ofthe following types of cancer kills the highest

percentage of people diagnosed with the condition?

A)lung

B)breast

C)prostate

D)skin

E)colon

64) A mutationin which of the following genes can lead to

breast cancer?

A) BT05

B) HeLa

C) BRCA1

D)BCG

E)BCG2

65) If angiogenesis

were not to occur, a tumor would reach the size of a ________and stop growing.

A) period on a

typewritten page (.)

B) baseball

C) grapefruit

D) pea

E) basketball

66) Not onlydoes smoking cause lung cancer, it also doubles

the risk of which of the following types of cancer?

A)stomach

B)prostate

C)bladder

67) For women with a

mutated BRCA gene, the risk of breast cancer is about 60%.However, detection

of the mutated gene can occur before cancer ever develops by

A) testing of a blood

sample.

B) screening

mammography.

C) taking a biopsy of

breast tissue.

D) a PET scan.

E) urinalysis.

68) In some cases, why

doesn%u2019t the immune system recognize and destroy acancer?

A) Cancer cells that

produce abnormal antigens sometimes shed them.

B) Cancer cells have

less surface receptors needed for proper activation of Tcells.

C) Cancer cells have

enough %u201Cself%u201D surface markers as to be identified asnormal cells.

D) Cancer cells develop

from normal cells that cannot regulate cell division.

E) all of the above are

correct.

69) Theultimate goal of the male reproductive system is to

A) ensure thatsperm is produced at the correct time,

coinciding with ovulation.

B) releasesperm into the female's reproductive system.

C) join spermwith an egg, in an environment that favors

fertilization.

D) producelarge numbers of sperm.

E) maintain thehomeostatic condition of the male's body.

70) Synthesisof new sperm cells occurs in the

A) ductusdeferens.

B)urethra.

C) prostategland.

D) epididymis.

E) seminiferous tubules.

71) Externalgenitalia

of the male reproductive system include(s)

A) theejaculatory duct.

B) the urethraand scrotum.

C) the penisand scrotum.

D) thepenis.

E) the penis,urethra, and ejaculatory duct.

72) The releaseof LH in human males signals that

A) inhibin hasinhibited FHS secretion.

B) thehypothalamus has been stimulated to release inhibin.

C) spermproduction must be reduced.

D) the positivefeedback loop that regulates sperm production

is active.

E) blood levels of

testosterone are low

emeraldjellyfish291

How does human cloning compare with other reproductive technologies such as in vitro fertilization, hormone treatments, or other forms? Pick one or two of the topics below to discuss in your original discussion post. Make sure you include scientific terms from the unit to support your statements. Your response to another person should be about a different topic than the one you discussed. Do you feel that cloning should be allowed: As a way for two parents who both carry the gene for a severe genetic disease and who will not accept abortion of an affected fetus to have a genetically related child guaranteed to be free of the disease? As a way for parents to be able to choose many characteristics of their children, including gender, hair and eye color, metabolic rate (i.e., the tendency to be overweight), and IQ? As a way to âbring backâ a child who was killed accidentally? As a way to âbring backâ an important or influential person (e.g., Albert Einstein or John F. Kennedy)? As a way to generate cells that could help heal a person suffering from a severe brain or spinal cord injury? As a way to generate new heart tissue for a person suffering from severe heart diseaseâtissue that would not require immune suppressants to fight rejection because it would be genetically identical to the rest of the body? As a way to allow new types of research into cures for diseases?

Directions: Write out your answers in the word document and then copy and paste everything into the text box. If you do not include the question along with your answer, you will be marked down.

1. What would happen if you put pGLO directly onto an agar plate and you checked on it after letting it incubate?

a. It would glow

b. It would grow

c. Nothing

d. E.Coli would grow

2. Explain in a short sentence or two your reasoning for question 1.

3. What shape is a plasmid?

4. How is a plasmid different from human DNA? Write one difference.

5. Bacteria can share DNA through a unique method called transformation. What are the TWO requirements a bacteria cell must possess in order to share DNA with another bacteria cell?

6. Why during our experiment did we put our e.Coli with pGLO inserted in it onto agar plates with ampicillin (Amp)?

a. So that it would kill the e.Coli and serve as our control

b. To kill all the e.Coli that did not take up the pGLO

c. To create antibiotic resistant bacteria

d. To cause the e.Coli to glow

7. Yeast cells are what type of cell?

a. Bacteria

b. Eukaryotes

c. Prokaryotes

d. Archaea

8. Why would someone study yeast cells instead of human cells?

9. Do you agree or disagree with the following statement: If your cells is exposed to UV light and it causes a thymidine dimer, your cell is doomed to die.

10. Are wildtype (control) yeast immune to UV light damage?

11. BTB was a dye we used to directly measure ________

a. PH

b. Oxygen

c. Carbon Dioxide

d. Carbon

12. BTB was a dye we used to INDIRECTLY measure ________

a. PH

b. Oxygen

c. Carbon Dioxide

d. Carbon

13. What is one reason why a plant would want to close its stomata?

14. What is one function that ground tissues provides for a plant?

15. List one difference between monocots and dicots

16. Why is it important for a plant to have stomata? Write one reason why

17. What is the purpose of xylem in a plant cell?

18. Pholem is also important to plant cells, what is itâs purpose?

19. This theory explains why trees can grow to such tall heights and still provide water to their leaves.

a. Translocation

b. Transpiration

c. Cohesion-Tension

d. Vacuum

20. Fill in the blank

Pholem is considered to be a(n) _________ transport system while xylem is considered a(n) _______________transport system.

21. Apical meristems are found in these two places on a plant

a. At the site of new leaf growth and the roots closes to the top of the soil

b. Vascular tissue and ground tissue

c. Ground tissue and dermal tissue

d. The point of new growth on the stem and root

22. Fill in the blank.

Xylem moves substances _____ while phloem moves substances _____ a plant.

23. What are the two types of digestive mechanisms?

24. What is one benefit that mastication has for digestion?

25. What is an example of an organism that digests food intracellularly?

26. What is an example of an organism that digests food extracellularly?

27. Give two examples of where surface area is increased in a small space to aid in absorption within the human body

28. Name one difference between arteries and veins.

29. What is the role of capillaries in the circulatory system?

30. How are the terms âexcretionâ and âdefecationâ different?

31. What is the role of the ADH hormone?

32. What does the term âMedullaâ refer to when talking about mammalian tissue?

a. The outer edges of a tissue

b. The middle of a tissue

c. The top of a tissue

d. The bottom of a tissue

33. Fill in the blank

Mammals have a _______ circulatory system while insects have a _______ circulatory system.

34. What is one benefit a closed circulatory system provides?

35. What is hemolymph?

BIOL 1410 Lecture Notes - Lecture 26: Epididymis, Rete Testis, Sertoli Cell

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