2007-08-28 12:12:10 · 13 answers · asked by ? 2 in Society & Culture ➔ Religion & Spirituality
All things, all life, is in the hands of God. The bible says He holds our very breath in His hands. Every molecule is His to command.
2007-08-28 12:19:25 · answer #1 · answered by Esther 7 · 1⤊ 4⤋
Pacemaker cells in the right atrium initiate a wave of depolarization that propagates over the atria, and crosses to the ventricular system via the atrial-ventricular junction. The Purkinje fibers carry the signal to the ventricles.
The contraction is generated when ionized calcium enters the cell, causing the release of additional calcium from the sarcoplasmic reticulum. The calcium binds to troponin C and the troponin system binds with an actin-myosin complex which contracts. At the end of the contraction, energy from ATP causes calcium to exit the cell and return to the sarcoplasmic reticulum, and for the actin-myosin system to be return to the energized, relaxed state.
2007-08-28 19:28:32 · answer #2 · answered by novangelis 7 · 1⤊ 0⤋
1) Evolution.
2) Involuntary muscle contractions, which increase or decrease in frequency due to environmental stimuli.
3) An instinctive lifelong fear that Chuck Norris is going to randomly appear and then roundhouse kick you in the face.
2007-08-28 19:27:50 · answer #3 · answered by Anonymous · 1⤊ 0⤋
As Windom Earle said, Electrical impulses sent from the brain.
2007-08-28 19:20:05 · answer #4 · answered by Anonymous · 2⤊ 0⤋
Heart cells actually begin beating upon creation, so it's more than just signals from the brain.
2007-08-28 19:21:27 · answer #5 · answered by w2 6 · 0⤊ 3⤋
Your brain. It controls all the functions but needs the others to work itself. Teamwork. Go team wooooo!!!!
2007-08-28 19:39:12 · answer #6 · answered by jason h 3 · 0⤊ 0⤋
Electrical impulses sent by the brain.
2007-08-28 19:18:39 · answer #7 · answered by Anonymous · 4⤊ 0⤋
Love.
2007-08-28 19:23:26 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Our autonomic nervous system controls our automatic systems such as circulatory and respiratory. Our sympathetic and parasympathetic nervous systems control all others.
2007-08-28 19:20:38 · answer #9 · answered by Shawn B 7 · 1⤊ 0⤋
Act 17:28 For in him we live, and move, and have our being; as certain also of your own poets have said, For we are also his offspring.
2007-08-28 19:20:47 · answer #10 · answered by Anonymous · 0⤊ 3⤋