SiSTEM Indra Kelas Xi

Buta warna adalah kondisi dimana seseorang tidak bisa membedakan warna tertentu. Hal ini disebabkan oleh ketidaknormalan atau ketidakmampuan sel-sel penglihatan dalam mata untuk merespons atau membedakan warna dengan benar. Penderita buta warna mungkin tidak dapat membedakan antara warna-warna tertentu, seperti merah dan hijau, atau biru dan kuning.

The statement is true because our ability to taste is due to the presence of receptors called taste buds or taste papillae on our tongue. These receptors are able to receive stimuli from the food we consume, allowing us to experience the sensation of taste.

Every sensory cell has fine hairs that help in detecting stimuli.

The statement is false because the taste buds for salty taste are located on the tip and sides of the tongue, not at the back. The taste buds at the back of the tongue are responsible for detecting bitter taste.

The correct answer is martil (mileus) - landasan (inkus) - sanggurdi (stapes). This is the correct sequence of the auditory ossicles in the middle ear. The malleus (martil) is the first bone, followed by the incus (landasan), and then the stapes (sanggurdi).

The correct answer is "Manis, asin, pahit". This is because the question is asking about the sequence of tastes that can be sensed on different parts of the tongue. According to the question, the tastes that can be sensed are sweet (manis), salty (asin), and bitter (pahit). Therefore, the correct answer is the one that lists these tastes in the correct order.

The correct answer is "koklea." The cochlea is a part of the inner ear that is responsible for hearing. It is shaped like a snail shell and contains tiny hair cells that convert sound vibrations into electrical signals that can be interpreted by the brain. The cochlea plays a crucial role in our ability to perceive and process sound.

The given passage describes the cells in the middle layer of the eye, which consists of approximately 100 million rod-shaped cells and 3 million cone-shaped cells. This description matches the characteristics of the retina, which is the light-sensitive layer at the back of the eye responsible for converting light into electrical signals that are sent to the brain for visual processing. The other options (pupil, iris, cornea, and lens) do not match the description provided in the passage.

Hipermetropi adalah kondisi dimana seseorang memiliki kesulitan melihat objek yang berada dekat dengan mata, namun masih dapat melihat objek yang berada pada jarak yang lebih jauh. Untuk mengatasi kondisi ini, penderita perlu menggunakan kacamata lensa positif yang membantu memfokuskan cahaya ke retina dengan benar sehingga objek yang berada dekat dapat terlihat dengan jelas.

The given passage describes the structure of the eye and mentions that the layer in front, called the cornea, is transparent and responsible for receiving and focusing incoming light. Among the options given, the only one that matches this description is the "sklera." The sklera is the white outer layer of the eye that covers most of its surface, while the other options mentioned (retina, bintik kuning, bintik buta, iris) do not fit the given information.

The eustachian tube functions to regulate the balance of air pressure between the middle ear and the outside air.

Lendir hidung membantu reseptor pembau menerima rangsangan gas kimia karena lendir tersebut berfungsi sebagai penangkap partikel-partikel kimia di udara yang masuk melalui hidung. Lendir ini mengandung reseptor pembau yang peka terhadap zat-zat kimia tertentu, sehingga ketika zat kimia tersebut masuk ke dalam hidung, reseptor pembau akan meresponsnya dan mengirimkan sinyal ke otak untuk diinterpretasikan sebagai bau.

The correct answer is 2) dan 1). This is because the Ruffini corpuscles are responsible for perceiving heat, while the Paccini corpuscles are responsible for perceiving strong pressure. Therefore, the correct combination for perceiving heat and strong pressure is 2) dan 1).

The correct answer is korpuskel Meissner. The Meissner corpuscle is a sensory receptor found in the skin that is responsible for detecting light touch and low-frequency vibrations. It is located in the upper layers of the skin, particularly in the fingertips, palms, soles of the feet, and lips. When stimulated by touch or pressure, the Meissner corpuscle sends signals to the brain, allowing us to perceive and respond to tactile sensations.

The pupil is the correct answer because it is the part of the eye that regulates the amount of light that enters the eye. It is located in the center of the iris and can change in size to control the amount of light that reaches the retina.

Presbikus is not a condition caused by loud noises, but rather it refers to age-related hearing loss. It is a gradual and natural decline in hearing ability that occurs as people get older. Loud noises can contribute to hearing loss, but they do not specifically cause presbikus. Therefore, the correct answer is false.

The given statement is true. Otosclerosis is a condition that affects the stapes bone in the middle ear and is characterized by symptoms such as tinnitus (ringing in the ears). It typically occurs during childhood.

Rodopsin adalah zat warna jingga yang sangat rentan terhadap cahaya yang dihasilkan oleh sel-sel batang dalam retina. Rodopsin berperan penting dalam penglihatan pada kondisi pencahayaan rendah atau gelap. Ketika cahaya masuk ke mata, rodopsin akan teraktivasi dan mengirimkan sinyal ke otak untuk diproses menjadi gambar yang dapat kita lihat. Jadi, rodopsin merupakan zat yang dihasilkan oleh sel-sel batang dan berfungsi dalam penglihatan dalam kondisi pencahayaan rendah.

The given statement states that the tympanic membrane is the boundary between the middle ear and the outer ear. This is true because the tympanic membrane, also known as the eardrum, separates the external auditory canal from the middle ear cavity. It vibrates in response to sound waves and transmits them to the middle ear bones, which then transmit the sound to the inner ear for further processing. Therefore, the statement is correct.

The iris is the part of the eye that functions as a diaphragm. It controls the size of the pupil, which regulates the amount of light entering the eye. The iris contains muscles that contract or expand to adjust the size of the pupil, depending on the lighting conditions. This mechanism helps to protect the sensitive retina from excessive light and allows for clear vision in different lighting environments.