PMID- 6663233
OWN - NLM
STAT- MEDLINE
DCOM- 19840307
LR  - 20151119
IS  - 0022-0752 (Print)
IS  - 0022-0752 (Linking)
VI  - 78
DP  - 1983 Dec
TI  - Development and motor innervation of a distal pair of fast and slow wing muscles 
      in the chick embryo.
PG  - 53-66
AB  - The chick wrist muscle ulnimetacarpalis dorsalis (umd) has two heads. Using 
      myosin ATPase and acetylcholinesterase (ACh.E) staining it was shown that one of 
      the heads is composed almost entirely of acid-stable muscle fibres with multiple 
      end plates (slow muscle fibres) and the other of acid-labile fibres with single 
      end plates (fast muscle fibres). The development of the muscle was traced from E7 
      (Stage 32-33) when it is a relatively homogeneous mass, to E18. The two heads of 
      the muscle are first distinguishable, by ATPase staining, at E8 (Stage 33-34) 
      prior to their cleaving. Both heads of the muscle are innervated by motoneurons 
      positioned laterally in the lateral motor column in spinal segments 15 and 16. 
      There is no observable difference in the positions of the motoneuron pools to the 
      two heads. At E18 the motoneurons innervating the fast head tend to be slightly 
      larger than those innervating the slow head.
FAU - Laing, N G
AU  - Laing NG
FAU - Lamb, A H
AU  - Lamb AH
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Embryol Exp Morphol
JT  - Journal of embryology and experimental morphology
JID - 7906439
SB  - IM
MH  - Animals
MH  - Chick Embryo
MH  - Motor Endplate/*embryology
MH  - Motor Neurons/*cytology
MH  - Muscles/*embryology/innervation
MH  - Neuromuscular Junction/*embryology
MH  - Spinal Cord/embryology
MH  - Wings, Animal
EDAT- 1983/12/01 00:00
MHDA- 1983/12/01 00:01
CRDT- 1983/12/01 00:00
PHST- 1983/12/01 00:00 [pubmed]
PHST- 1983/12/01 00:01 [medline]
PHST- 1983/12/01 00:00 [entrez]
PST - ppublish
SO  - J Embryol Exp Morphol. 1983 Dec;78:53-66.