What is intracranial atherosclerosis? Intracranial simply means âinside the skull.â Atherosclerosis is a hardening of the arteries. So, intracranial atherosclerosis is a narrowing and hardening of the arteries in the skull. Generally there are no symptoms until the arteries are so clogged with plaque that blood can no longer flow through them.
According to Baby Center, is possible to hear the baby's heartbeat at about 8 weeks via ultrasound. A fetus's heartbeat begins at about 6 weeks gestation.
A heart murmur is an extra or unusual sound heard during a heartbeat. Murmurs range from very faint to very loud. Sometimes they sound like a whooshing or swishing noise. Normal heartbeats make a lub-DUPP or lub-DUB sound. This is the sound of the heart valves closing as blood moves through the heart.Doctors can hear these sounds and heart murmurs using a stethoscope.urmurs range from very faint to very loud. Sometimes they sound like a whooshing or swishing noise. Normal heartbeats make a lub-DUPP or lub-DUB sound. This is the sound of the heart valves closing as blood moves through the heart. Doctors can hear these sounds and heart murmurs using a stethoscope.