The Ability of Sperm Cells to Move Along the Ductus

question 60

Multiple Choice

The ability of sperm cells to move along the ductus deferens is due to .

• A) gravity
• B) hormonal action
• C) peristaltic contractions
• D) enzymatic activity

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Definitions:

Weld Symbol

A symbolic representation used in technical drawings to identify the type, location, dimension, and other details of a weld.

Plug Weld

A type of weld used to fill a hole in one component that is to be joined to another component, securing them together.

Weld Symbol

A set of standard symbols used on blueprints and drawings to specify the type of weld, its size, and other processing and finishing information.

Countersink

A conical-shaped recess around a hole often used to allow the flat head of a screw or bolt to sit flush with or below the surface of the material.