1.
1. Hanya dibutuhkan organ jantung saja dalam sistem peredaran darah manusia.
Correct Answer
B. False
Explanation
The statement is false because the human circulatory system consists of more than just the heart. It also includes blood vessels, such as arteries, veins, and capillaries, which transport blood throughout the body. Additionally, the circulatory system includes components like blood, which carries oxygen, nutrients, hormones, and waste products, and the lymphatic system, which helps to remove toxins and waste from the body. Therefore, it is incorrect to say that only the heart is needed in the human circulatory system.
2.
2. Berikut ini adalah aktor yang berperan dalam peredaran darah manusia... Kecuali...
Correct Answer
C. Darah, colon, peristaltik
Explanation
The given options are related to the circulation of blood in the human body. The correct answer is "Darah, colon, peristaltik" because while blood and peristalsis (the involuntary contraction of muscles in the digestive tract) are involved in bodily processes, the colon (part of the large intestine) is not directly involved in the circulation of blood.
3.
Darah hanya mengangkut oksigen dan karbondioksida
Correct Answer
B. False
Explanation
The statement is false because blood not only transports oxygen and carbon dioxide but also carries nutrients, hormones, waste products, and immune cells throughout the body. Additionally, blood plays a crucial role in regulating body temperature and maintaining pH balance.
4.
4. Peredaran darah kecil adalah peredaran darah yang mengalir dari jantung ke seluruh tubuh dan sebaliknya peredaran darah besar terjadi dari paru-paru ke jantung
Correct Answer
B. False
Explanation
The correct answer is False. The statement is incorrect as it states that the small circulation of blood flows from the heart to the entire body, and the large circulation of blood occurs from the lungs to the heart. In reality, the small circulation of blood, also known as pulmonary circulation, occurs between the heart and the lungs, while the large circulation of blood, also known as systemic circulation, occurs between the heart and the rest of the body.
5.
Berikut ini adalah ciri dari leukosit... Kecuali...
Correct Answer
C. Umur hidup 120 hari
Explanation
Leukosit adalah jenis sel darah putih yang berperan dalam sistem kekebalan tubuh untuk melawan infeksi dan penyakit. Mereka memiliki beberapa bentuk yang berbeda, seperti neutrofil, limfosit, monosit, eosinofil, dan basofil. Salah satu ciri leukosit adalah memiliki umur hidup sekitar 120 hari sebelum akhirnya dihancurkan dan digantikan oleh sel darah putih yang baru. Oleh karena itu, jawaban yang tidak sesuai dengan ciri-ciri leukosit adalah "Umur hidup 120 hari".
6.
Fungsi darah secara general adalah ....
Correct Answer
C. Menentukan golongan darah
Explanation
The correct answer is "Menentukan golongan darah". Blood plays a crucial role in determining a person's blood type or blood group. The blood type is determined by the presence or absence of certain antigens on the surface of red blood cells. These antigens are inherited from parents and are responsible for determining compatibility for blood transfusions and organ transplants. Therefore, blood plays a significant role in determining an individual's blood group.
7.
Jumlah serambi di jantung adalah ...
Correct Answer
B. 2
Explanation
The correct answer is 2 because the question is asking for the number of "serambi" (atrium) in the heart. The heart has four chambers: two atria and two ventricles. The atria are the upper chambers of the heart, and there are two of them. Therefore, the correct answer is 2.
8.
Yang berperan dalam proses pengangkutan darah dari jantung ke seluruh tubuh adalah....
Correct Answer
B. Pembuluh darah
Explanation
Pembuluh darah adalah yang berperan dalam proses pengangkutan darah dari jantung ke seluruh tubuh. Pembuluh darah terdiri dari arteri, vena, dan kapiler yang membantu mengalirkan darah ke seluruh bagian tubuh. Arteri membawa darah kaya oksigen dari jantung ke seluruh tubuh, sedangkan vena membawa darah yang mengandung karbon dioksida kembali ke jantung. Pembuluh darah juga berperan dalam mengatur tekanan darah dan mempertahankan keseimbangan cairan dalam tubuh.
9.
Gambar apakah benda disamping?
Correct Answer
D. Eritrosit
Explanation
The correct answer is "Eritrosit" because erythrocytes, or red blood cells, are the most abundant type of blood cells and are responsible for carrying oxygen to the body's tissues. They contain a protein called hemoglobin, which binds to oxygen in the lungs and releases it in the tissues. Erythrocytes have a characteristic biconcave shape that increases their surface area and allows for efficient oxygen exchange.
10.
Fungsi dari benda pada gambar adalah ....
Correct Answer
C. Memnjaga kekebalan tubuh
Explanation
The function of the object in the picture is to maintain immunity.
11.
Kelainan yang terjadi pada gambar di sebut ...
Correct Answer
C. Varises
Explanation
Varises adalah kelainan yang terjadi pada pembuluh darah vena, di mana pembuluh darah tersebut mengalami pelebaran dan membesar. Hal ini biasanya terjadi karena adanya penumpukan darah pada pembuluh vena yang melemah, sehingga pembuluh vena tampak menjorok keluar dan berwarna kebiruan atau keunguan. Kelainan ini umumnya terjadi pada kaki dan dapat menyebabkan gejala seperti nyeri, pembengkakan, dan rasa berat pada kaki.
12.
Pembuluh nadi terbesar di sebut dengan.....
Correct Answer
A. Aorta
Explanation
The correct answer is Aorta. The aorta is the largest artery in the body and carries oxygenated blood from the heart to the rest of the body. It originates from the left ventricle of the heart and branches out to supply blood to all organs and tissues. The vena cava is a large vein that carries deoxygenated blood from the body back to the heart. Arteries carry oxygenated blood away from the heart, while vena pulmonalis carries oxygenated blood from the lungs to the heart.
13.
Tekanan darah normal pada orang dewasa adalah ....
Correct Answer
D. 120/80
Explanation
The correct answer is 120/80. This is considered the normal blood pressure for adults. The first number, 120, represents the systolic pressure, which is the pressure in the arteries when the heart beats and pumps blood. The second number, 80, represents the diastolic pressure, which is the pressure in the arteries when the heart is at rest between beats. A blood pressure reading of 120/80 is considered healthy and indicates that the heart is functioning properly and the blood vessels are not under excessive strain.
14.
Alat manakah yang digunakan untuk mengukur tekanan darah?
Correct Answer
C. Option 3
Explanation
Option 3 is the correct answer because it is the only option that is related to measuring blood pressure. Measuring blood pressure requires the use of a blood pressure monitor or sphygmomanometer, which is a device used to measure the pressure of the blood in the arteries. Options 1, 2, and 4 do not have any relevance to measuring blood pressure.
15.
Jantung akan berdetak lebih cepat ketika seseorang melakukan aktifitas fisik.
Correct Answer
A. True
Explanation
When a person engages in physical activity, their heart rate increases to meet the increased demand for oxygen and nutrients by the muscles. This is a normal physiological response to ensure that the body is adequately supplied with blood and oxygen during exercise. Therefore, it is true that the heart beats faster during physical activity.
16.
Ada 3 macam bentuk darah
Correct Answer
A. True
Explanation
There are three types of blood, namely A, B, and O. Each type can be either Rh positive or Rh negative, resulting in a total of six possible blood types. Therefore, the statement that there are three types of blood is true.
17.
Tekanan pada saat jantung berkontraksi disebut
Correct Answer
A. Sistol
Explanation
The correct answer is "Sistol". Sistol refers to the pressure exerted on the walls of the arteries when the heart contracts and pumps blood into the circulation. It is the higher number in a blood pressure reading and represents the maximum force exerted by the heart. Diastol, on the other hand, refers to the pressure in the arteries when the heart is at rest and filling with blood. Piatol and Aorta are not related to the pressure during heart contraction.
18.
Besar jantung kira-kira sekepal tangan kita.
Correct Answer
A. True
Explanation
The statement in the question states that the size of the heart is approximately the size of our fist. This is a true statement as the average adult heart is roughly the size of a clenched fist, weighing about 11 ounces (310 grams) and measuring about 5 inches (13 centimeters) in length.
19.
Berikut ini adalah kelainan pada peredaran darah manusia... Kecuali
Correct Answer
B. Hipotermia
Explanation
The given options are all conditions related to the circulatory system except for "Hipotermia" which refers to a condition of abnormally low body temperature. Aterosklerosis is the buildup of plaque in the arteries, hipertensi is high blood pressure, and stroke is a disruption of blood supply to the brain.
20.
Anemia adalah penyakit kelebihan sel darah merah di dalam tubuh
Correct Answer
B. False
Explanation
The given statement is false. Anemia is not a disease of excess red blood cells in the body. Instead, anemia is a condition characterized by a decrease in the number of red blood cells or a decrease in the amount of hemoglobin in the blood. This can lead to symptoms such as fatigue, weakness, and shortness of breath. Anemia can be caused by various factors, including nutritional deficiencies, chronic diseases, and genetic disorders.
21.
Stroke dapat disebabkan oleh hipertensi, aterosklerosis, ateriosklerosis
Correct Answer
A. True
Explanation
The statement is true because stroke can indeed be caused by hypertension, atherosclerosis, and atherosclerosis. Hypertension, or high blood pressure, can damage blood vessels and increase the risk of stroke. Atherosclerosis refers to the buildup of plaque in the arteries, which can lead to blockages and restrict blood flow to the brain, potentially causing a stroke. Ateriosklerosis is likely a typo for atherosclerosis, as they refer to the same condition. Overall, these conditions are known risk factors for stroke, making the statement true.
22.
Pembuluh balik selalu bergerak meninggalkan jantung
Correct Answer
B. False
Explanation
The statement "Pembuluh balik selalu bergerak meninggalkan jantung" is incorrect. Pembuluh balik, also known as veins, carry blood towards the heart, not away from it. Therefore, the correct answer is False.
23.
Ciri pembuluh nadi (arteri) adalah...
Correct Answer
C. Bersifat elastis
Explanation
Arteries are blood vessels that carry oxygenated blood away from the heart to the rest of the body. One of the characteristics of arteries is that they are elastic. This means that they have the ability to stretch and recoil, allowing them to accommodate the surge of blood that is pumped out by the heart during each heartbeat. The elasticity of arteries helps to maintain blood pressure and ensures a continuous flow of blood throughout the body.
24.
Pertukaran Oksigen dan karbondioksida yang dibawa oleh darah terjadi pada ....
Correct Answer
D. Option 4
Explanation
The exchange of oxygen and carbon dioxide in the blood occurs in the lungs. Oxygen is taken in through the lungs and binds to hemoglobin in red blood cells, while carbon dioxide is released from the cells and diffuses into the lungs to be exhaled. Therefore, Option 4, which is the lungs, is the correct answer.