Question

Будова опорно-рухової системи молюсків​

Answer 1

Ответ:

Тулуб молюсків захищений черепашкою, яка становить собою особливий тип зовнішнього скелета, і з боків оточений складкою шкіри - мантією. М'язи, як і в членистоногих, поділені на окремі пучки. Одні з них втягують ногу та голову молюсків у черепашку, інші забезпечують пересування тощо.

Answer 2

Structure of the Muscular System in Mollusks

The muscular system in mollusks is a complex network of muscles that enables various forms of movement and support within their bodies. Mollusks, a diverse group of invertebrates, exhibit a wide range of body plans and locomotion methods. The structure of their muscular system reflects this diversity.

Muscle Types: Mollusks possess different types of muscles, including smooth muscles, striated muscles, and circular and longitudinal muscles. These muscles are responsible for various movements such as locomotion, feeding, and respiration.

Foot Muscles: One of the key components of the muscular system in mollusks is the foot muscle. This muscular structure is particularly prominent in species like gastropods, where it plays a crucial role in locomotion. The foot muscle allows mollusks to move by contracting and relaxing, enabling them to glide, crawl, or burrow.

Adductor Muscles: In bivalve mollusks, such as clams and mussels, adductor muscles are vital for the opening and closing of their shells. These powerful muscles enable bivalves to tightly close their shells for protection and relaxation, and to open them for feeding and respiration.

Radial and Circular Muscles: Some mollusks, like cephalopods, possess radial and circular muscles that control the movement and shape of their soft bodies. These muscles allow for precise and rapid movements, facilitating activities such as jet propulsion and complex body pattern changes.

Connective Tissues: In addition to muscles, mollusks also have connective tissues that provide structural support and facilitate coordinated movements. These tissues, including elastic fibers and connective sheaths, contribute to the overall integrity and flexibility of the muscular system in mollusks.

In summary, the muscular system in mollusks is a diverse and specialized network of muscles and connective tissues that enable a wide range of movements and functions essential for their survival and adaptation to various environments.