Question

25 БАЛЛОВ! СРОЧНО1какие мышцы образуют стенки кровеносных сосудов, кишечника и желудка? 2.Из какой мышечной ткани состоит сердечная мышца(гладкая, поперечно-полосная)?3.К какому типу мышечной ткани относится круговой мышцы рта и глаз(гладкие, поперечно-полосатые)? 4.Какую форму имеют скелетные мышцы (веретеновидная, лентовидная, шаровидная, круговая)? 5.Какие мышцы получили наибольшее развитие в связи с прямохождением(затылочные, спинные, грудные, ягодичные, икроножные)?​

Answer 1

Ответ:

1.гладкие

2.сердечная(миокард)

3. не знаю

4. веретеновидную

5.не знаю

Answer 2

Muscles that form the walls of blood vessels, intestines, and stomach:

The muscles that form the walls of blood vessels, intestines, and stomach are smooth muscles. Smooth muscles are involuntary muscles that are found in the walls of various organs and structures in the body. They are responsible for the contraction and relaxation of these organs, allowing them to perform their functions. .

Muscle tissue in the heart:

The muscle tissue in the heart is called cardiac muscle. Cardiac muscle is a specialized type of muscle tissue that is found only in the heart. It is striated (has a striped appearance) and involuntary, meaning it contracts without conscious control. Cardiac muscle is responsible for the rhythmic contractions of the heart, which pump blood throughout the body. .

Muscle tissue in the mouth and eyes:

The muscle tissue in the mouth and eyes includes both smooth muscles and striated muscles. The circular muscles in the mouth and eyes, such as the muscles that control the opening and closing of the mouth and the muscles that control the size of the pupil, are smooth muscles. Smooth muscles are responsible for various involuntary movements in the body. On the other hand, the muscles that control the movement of the eyes, such as the extraocular muscles, are striated muscles. Striated muscles are also known as skeletal muscles and are responsible for voluntary movements. .

Shape of skeletal muscles:

Skeletal muscles, which are attached to bones and allow for voluntary movement, come in various shapes. Some common shapes of skeletal muscles include:

- Fusiform: These muscles have a spindle-like shape, with a thick middle and tapered ends. They are found in areas such as the biceps and gastrocnemius muscles. - Strap-like: These muscles are long and thin, resembling a strap. An example is the sartorius muscle in the thigh. - Sphincter or circular: These muscles form a ring-like shape and are found in areas such as the muscles that control the openings of the digestive and urinary tracts. - Quadrate: These muscles have a square or rectangular shape. An example is the pronator quadratus muscle in the forearm. - Pennate: These muscles have feather-like fibers that attach obliquely to a central tendon. Examples include the deltoid muscle in the shoulder and the rectus femoris muscle in the thigh. .

Muscles developed in relation to bipedalism:

In humans, the muscles that have undergone the greatest development in relation to bipedalism (walking on two legs) include the gluteal muscles (located in the buttocks), hamstring muscles (located in the back of the thigh), and calf muscles (located in the lower leg). These muscles play a crucial role in maintaining balance, stability, and propulsion during walking and running. The gluteal muscles, specifically the gluteus maximus, are particularly important for maintaining an upright posture and extending the hip joint. The hamstring muscles are responsible for flexing the knee and extending the hip, while the calf muscles, including the gastrocnemius and soleus muscles, are involved in plantarflexion of the foot and pushing off the ground during walking and running. .