The spermatids are transformed into spermatozoa by a process called:
1. | Spermiation | 2. | Spermatocytogenesis |
3. | Spermiogenesis | 4. | Spermatolysis |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Which of the following helps spermatids in their transformation to sperms?
1. | Leydig cells | 2. | Type B spermatogonia |
3. | Type A spermatogonia | 4. | Sertoli cells |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Leydig cells synthesize androgens under the direct influence of:
1. | FSH | 2. | LH |
3. | FSH and LH | 4. | GnRH |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
FSH:
1. | Acts on Sertoli cells and stimulates secretion of some factors that help in spermiogenesis |
2. | Acts on Sertoli cells and inhibits secretion of some factors that help in spermiogenesis |
3. | Acts on Leydig cells and stimulates secretion of some factors that help in spermiogenesis |
4. | Acts on Leydig cells and inhibits secretion of some factors that help in spermiogenesis |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
A cross-section at the midpoint of the middle piece of a human sperm will show :
1. | centriole, mitochondria, and 9+2 arrangement of microtubules |
2. | centriole and mitochondria |
3. | mitochondria and 9+2 arrangement of microtubules |
4. | 9+2 arrangement of microtubules only |
An organelle covering the head of animal sperm and containing enzymes that digest the egg cell coating, thus permitting the sperm to enter the egg is called as:
1. | nebenkern | 2. | manchette |
3. | head | 4. | acrosome |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
In humans, the process of spermatogenesis in males and oogenesis in females are similar in:
1. | Age at which the processes begin |
2. | The number of resultant haploid cells |
3. | Cytokinesis |
4. | Occurring in respective primary sex organs |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
The term used to describe the changes that happen to the sperm inside the female reproductive tract that allows the sperm to become capable of fertilizing the egg is:
1. | spermiogenesis | 2. | the acrosomal reaction |
3. | capacitation | 4. | implantation |