Quiz Flashcards
The primary male reproductive organ is _______.
A) Testis
B) Scrotum
C) Epididymis
D) Penis
A) Testis
________ are the sites of spermatogenesis.
A) Ductus deferens
B) Seminiferous tubules
C) Rete tubules
D) Efferent ductules
B) Seminiferous tubules
Testosterone is converted into dihydrotestosterone by _________.
A) Aromatase
B) 17, 20 desmolase
C) 5alpha-reductase
D) 17alpha-hydroxylase
C)
The copulatory behavior of females characterized by distinct behavior and mating posture (lordosis) that ensures insemination is called _________.
A) Proceptivity
B) Attractivity
C) Receptivity
D) All of the above
C)
The testicular thermoregulation is maintained by ________.
A) Scrotal sweating
B) Thermal polypnea
C) Vascular heat exchange
D) All of the above
D)
The sigmoid flexures of the penis is present in ________ and ________.
A) Bull
B) Boar
C) Tomcat
D) Stallion
E) Human
F) Dog
A and B
_______ and ______ are erectile tissues of the penis.
A) Ischiocavernosus
B) Corpus cavernosum
C) Corpus spongiosum
D) Bulbospongiosus
E) Retractor penis
F) Tunica dartos
B and C
Sertoli cells ______ and _____.
A) Are also called developing germ cells
B) are somatic cells present within the interstitial compartment
C) provide mechanical support for the developing germ cells
D) express receptors for FSH
E) have no role in spermatogenesis
F) produce testosterone
B and C
_____ and _____ undergo meiosis during spermatogenesis.
A) spermatogonia (A1)
B) spermatogonia (I)
C) spermatogonia (B)
D) primary spermatocyte
E) secondary spermatocyte
F) spermatid
D and E
The reproductive behavior of a bull in the presence of an estrous cow is sequentially listed below except _____ and ____.
A) Sexual arousal
B) Erection
C) Penile protrusion
D) Intromission
E) Mounting
F) Ejaculation
Switch D and E
True or false: Blood-testis barrier prevents communication between germ cells and Sertoli cells.
False
True or false: estradiol is not synthesized in male animals.
False
True or false: the release of formed germ cells into the lumen of the seminiferous tubules is called spermatogenesis
False; spermiation
True or false: the Flehmen response is a characteristic reproductive behavior of animals to transfer less volatile materials into their vomeronasal organ.
True
True or false: the cauda epididymis is the primary storage site for mature sperm.
True
Match the male animal to the feature of its reproductive organ.
A) stallion
B) ram
C) boar
D) dog
E) tomcat
1) os penis
2) penile spines
3) musculocavernous penis
4) urethral process
5) preputial diverticulum
1) D
2) E
3) A
4) B
5) C
