Spermatozoon Anatomy

Question 1

Four distinct regions of each spermatozoon

Answer 1

Head, neck, middle piece, and tail

Question 2

The head is

Answer 2

A flattened ellipse Containing a nucleus with densely packed chromosomes

Question 3

At the tip of the head is the acrosome

Answer 3

AKA Acrosomal Cap

A membranous compartment containing enzymes essential to fertilization

Question 4

What ultimately forms the acrosome

Answer 4

Saccules of the spermatid’s Golgi apparatus fuse and flatten into acrosomal vesicles.

Question 5

The neck contains

Answer 5

Both centrioles of the original spermatid.

Question 6

The microtubules of the distal centrioles are continuous with

Answer 6

Those of the middle piece and tail.

Question 7

Mitochondria in the middle piece

Answer 7

1. Arranged in a spiral around the microtubules

2. Provide the ATP required to move the tail

Question 8

What is the only flagellum in the human body

Answer 8

The tail

Question 9

Flagellum

Answer 9

A whiplike organelle that moves a cell from one place to another.

Has a whiplike, corkscrew motion.

Question 10

What does a mature spermatozoon lack

Answer 10

Endoplasmic reticulum
Golgi apparatus
Lysosomes
Peroxisomes 
Inclusions, and other organelles
Lacks glycogen or other energy reserves, it must absorb nutrients primarily fructose from the surrounding fluid

Question 11

A sperm is essentially

Answer 11

A mobile carrier for chromosomes