Podcast
Questions and Answers
What is the primary function of the neck of the sperm?
What is the primary function of the neck of the sperm?
- Facilitates the corkscrew motion
- Provides ATP for movement
- Contains enzymes essential for fertilization (correct)
- Stores genetic material
Which part of the sperm provides the energy needed for movement?
Which part of the sperm provides the energy needed for movement?
- Neck
- Head
- Middle piece (correct)
- Tail
Which hormone stimulates the release of Inhibin and Testosterone from the testes?
Which hormone stimulates the release of Inhibin and Testosterone from the testes?
- Gonadotropin-releasing hormone (GnRH)
- Progesterone
- Follicle-stimulating hormone (FSH)
- Luteinizing hormone (LH) (correct)
What unique motion does the tail of the sperm perform?
What unique motion does the tail of the sperm perform?
What structure is the sole flagellum in the human body?
What structure is the sole flagellum in the human body?
Flashcards
Sperm Head
Sperm Head
A flattened ellipse in sperm containing genetic material (DNA) packaged as chromosomes.
Sperm Neck
Sperm Neck
The narrow portion of a sperm connecting the head to the middle piece.
Sperm Middle Piece
Sperm Middle Piece
Contains mitochondria spiraled around microtubules, providing energy (ATP) for tail movement.
Sperm Tail
Sperm Tail
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Gonadotropin Hormone Regulation
Gonadotropin Hormone Regulation
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Study Notes
Sperm Anatomy
- Sperm has a head, neck, middle piece, and tail.
- The head is a flattened ellipse containing the nucleus with chromosomes (DNA).
- The neck contains enzymes vital for fertilization.
- The middle piece is attached to the head by a short neck.
- The middle piece contains mitochondria arranged in a spiral around microtubules. These provide ATP for tail movement.
- The tail is the only flagellum in the human body.
- The tail is a whiplike organelle with a complex, corkscrew motion that moves the sperm.
Hypothalamus-Pituitary Regulation
- Gonadotropin hormones (FSH and LH) are released from the anterior lobe of the pituitary gland.
- These hormones stimulate the testes to release other hormones (inhibin and testosterone).
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