So humans usually have five digits per hand, one of which is the thumb. Appendages like your fingers, toes, and thumbs are digits. Then it measures how much light is reflected off the gases. It does this by sending infrared light to the capillaries of the finger, toe, or earlobe. You may notice that your thumb or other parts of your body twitch. A pulse oximeter is a non-invasive device that calculates the amount of oxygen in your blood. Thumb refers to the first digit of the human hand, set apart and opposable to the other four digits of the hand. Stress hormones can also make you shaky and jittery. So if a thumb is not really a finger, what is it? Thumb Definition
Turn your wrist so your palm is facing up. The thumb is out to the side of the hand and lower than the four fingers. How do I check my resting heart rate Sit down and rest for 5 minutes. A thumb only has one joint and two phalanges. Your fingers have two joints and three bones called phalanges or phalanxes. If your pulse is very low or if you have frequent episodes of unexplained fast heart rates, especially if they cause you to feel weak or dizzy or faint, tell your doctor, who can decide if it’s an emergency. Your thumb is different from your fingers. Keeping tabs on your heart rate can help your doctor determine whether to change the dosage or switch to a different medication.
Swelling and constant pressure to this area can cause pain, numbness, tingling and involuntary twitching of your fingers (thumb included). Your doctor can do a simple test called an ECG (electrocardiogram). If you look up finger on, you will find this definition: “Each of the four slender jointed parts attached to either hand.” Doesn’t this definition seem to exclude the thumb? Why exclude it? Thumb vs. Carpal tunnel is an area in your wrist through which median nerve ( the nerve that gives feeling and movement to the palm side of your hand) enters the hand. Fortunately, if you have AF, theres medication you can take to help reduce this stroke risk.