The most important process maintaining the internal homeostasis is ()
A. nervous regulation
B. humoral regulation
C. autoregulation
D. positive feedback
E. negative feedback
查看答案
The manner by which K+ moves out the cell membrane is ()
A. simple diffusion
B. facilitated diffusion
C. active transport
D. endocytosis
E. exocytosis
Compared with the simple diffusion, the primary characteristic of facilitated diffusion is ()
A. a diffusion in the same direction as the concentration difference
B. the diffusion volume increasing when the temperature rises
C. a diffusion under the help of membrane proteins
D. not consuming energy
E. a diffusion without saturation
Which ion is the key factor that involves in releasing of neurotransmitter on the neuromuscular junction ()
A. Cl-
B. K+
C. Mg2+
D. Ca2+
E. Na+
The accessory structures of the synovial joint include ()
A. ligaments
B. articular disc
C. articular labrum
D. synovial fold
E. synovial bursa
微信支付 
支付宝支付